Anonymous

Reference of Measurements in Halacha: Difference between revisions

From Halachipedia

Reference of Measurements in Halacha (view source)

Revision as of 21:52, 11 June 2019

31 bytes added ,  11 June 2019
m
→‎Shaot Zmaniot
(added table for amah, tefach and etzbah and made other minor changes.)
Line 82: Line 82:
#[[Shaot Zmaniot]] are halachic hours which are calculated by dividing the daytime hours into 12. There’s a dispute of how to measure the day; some count the day from Olot HaShachar until [[Tzet HaKochavim]] (Magen Avraham) <ref>Many authorities holds that the halachic hours in the day are considered from Olot including: Sh”t Trumat HaDeshen 1, Levush 267, Minchat Cohen (Mevoh Shemesh 2:6) in name of Tosfot Ramban and Rashba, Bach (431), Taz 433, Pri [[Chadash]] 443, Magen Avraham 58:1, 433:3, Eliyah Raba 58:2, Mizbe’ach Adama 4a, Mikraeh Kodesh 158b, Mateh Yehuda 433, Sh”t Chaim Shal 2:38(70), Tov Ayin 18:38, Sh”t Teshuva MaAhava 1:25, Shalmei Tzibbur 93c, Chesed Alafim 58:5, Chaye Adam 21:3,27:1, Kitzur Shulchan Aruch 17:1, Magen Giborim (Shiltei Hagiborim 58:3), and Rav Poalim O”C 2:2. </ref>, and some count it from [[HaNetz]] until [[Shekiah]] (Gra).<ref>Many authorities hold that the halachic hours of the day are considered to begin from [[HaNetz]] incluing: Rambam’s Sh”t Pear Hadar 44 (as understood by Halacha Brurah (Shaar Tzion 58:17), Rav Chaim Drok (Noam 9 pg 235), and Orot Chaim 320 against the Yetsiat Mitzmayim (Sefaka Deyoa pg 115)), Siddur Rav Sadyah Goan pg 12, Minchat Cohen Mevoh Hashemesh 2:6 in name of Goanim, Rambam, Rabbenu Yonah, Hagahot Maimon, and Mordechai (Pri [[Chadash]] rejects his proofs), Shiltei Hagiborim on the Mordechai ([[Brachot]] 4:3) (as understood by Magen Avraham 233:3, Shaar Tzion 233:10, and Kaf HaChaim 233:7), Levush (233:1,267), Shaarei Knesset Hagedolah 58:8, Tosfot [[Yom Tov]] (Pesachim 2:3), and Biur HaGra 459:2.</ref>
#[[Shaot Zmaniot]] are halachic hours which are calculated by dividing the daytime hours into 12. There’s a dispute of how to measure the day; some count the day from Olot HaShachar until [[Tzet HaKochavim]] (Magen Avraham) <ref>Many authorities holds that the halachic hours in the day are considered from Olot including: Sh”t Trumat HaDeshen 1, Levush 267, Minchat Cohen (Mevoh Shemesh 2:6) in name of Tosfot Ramban and Rashba, Bach (431), Taz 433, Pri [[Chadash]] 443, Magen Avraham 58:1, 433:3, Eliyah Raba 58:2, Mizbe’ach Adama 4a, Mikraeh Kodesh 158b, Mateh Yehuda 433, Sh”t Chaim Shal 2:38(70), Tov Ayin 18:38, Sh”t Teshuva MaAhava 1:25, Shalmei Tzibbur 93c, Chesed Alafim 58:5, Chaye Adam 21:3,27:1, Kitzur Shulchan Aruch 17:1, Magen Giborim (Shiltei Hagiborim 58:3), and Rav Poalim O”C 2:2. </ref>, and some count it from [[HaNetz]] until [[Shekiah]] (Gra).<ref>Many authorities hold that the halachic hours of the day are considered to begin from [[HaNetz]] incluing: Rambam’s Sh”t Pear Hadar 44 (as understood by Halacha Brurah (Shaar Tzion 58:17), Rav Chaim Drok (Noam 9 pg 235), and Orot Chaim 320 against the Yetsiat Mitzmayim (Sefaka Deyoa pg 115)), Siddur Rav Sadyah Goan pg 12, Minchat Cohen Mevoh Hashemesh 2:6 in name of Goanim, Rambam, Rabbenu Yonah, Hagahot Maimon, and Mordechai (Pri [[Chadash]] rejects his proofs), Shiltei Hagiborim on the Mordechai ([[Brachot]] 4:3) (as understood by Magen Avraham 233:3, Shaar Tzion 233:10, and Kaf HaChaim 233:7), Levush (233:1,267), Shaarei Knesset Hagedolah 58:8, Tosfot [[Yom Tov]] (Pesachim 2:3), and Biur HaGra 459:2.</ref>
##According to Sephardim, regarding Deoritta laws (including [[Kriyat Shema]]) one should be strict for the opinion of the Magen Avraham. <ref>In conclusion, Minchat Cohen (Mevoh Hashemesh 2:9), Erech HaShulchan 433, Halichot Olam (vol 1, Vaera 3), and Yalkut Yosef (vol 1, pg 98) write that one should be strict for the opinion of the Magen Avraham for Deoritta issues, for example [[Kriyat Shema]]. </ref>
##According to Sephardim, regarding Deoritta laws (including [[Kriyat Shema]]) one should be strict for the opinion of the Magen Avraham. <ref>In conclusion, Minchat Cohen (Mevoh Hashemesh 2:9), Erech HaShulchan 433, Halichot Olam (vol 1, Vaera 3), and Yalkut Yosef (vol 1, pg 98) write that one should be strict for the opinion of the Magen Avraham for Deoritta issues, for example [[Kriyat Shema]]. </ref>
##Among Ashkenazim, some are strict to hold like the Magen Avraham, unless there is an serious need, in which case one may hold like the Gra. <ref>Rabbi Yechiel Michel Tukachinsky in Sefer Eretz Yisrael (pg 18#3) writes that the minhag of [[Israel]] is to follow the magen avraham and only under pressure may one rely on the Gra.</ref>However, some are lenient to rely on the Gra. <ref>[http://www.yutorah.org/lectures/lecture.cfm/728553/Rabbi_Hershel_Schachter/Shiur_on_Zmanim_in_Halacha Rav Hershel Schachter on yutorah.org] (min 77-79) says that many follow the opinion of the Gra in calculating the time for Sof [[Kriyat Shema]]. </ref>
##Among Ashkenazim, some are strict to hold like the Magen Avraham, unless there is an serious need, in which case one may hold like the Gra. <ref>Rabbi Yechiel Michel Tukachinsky in Sefer Eretz Yisrael (pg 18#3) writes that the minhag of [[Israel]] is to follow the magen avraham and only under pressure may one rely on the Gra.</ref> However, some are lenient to rely on the Gra. <ref>[http://www.yutorah.org/lectures/lecture.cfm/728553/Rabbi_Hershel_Schachter/Shiur_on_Zmanim_in_Halacha Rav Hershel Schachter on yutorah.org] (min 77-79) says that many follow the opinion of the Gra in calculating the time for Sof [[Kriyat Shema]]. </ref>


===Olot HaShachar===
===Olot HaShachar===
Line 112: Line 112:
===Mincha Gedola===
===Mincha Gedola===


#Mincha Gedola is six and a half halachic hours (Shaot Zmaniyot) after sunrise.<ref>Rashi (Pesachim 107a s.v. mincha gedola), Rambam (Tefillah 3:2)</ref>
#Mincha Gedola is six and a half halachic hours (Shaot Zmaniot) after sunrise.<ref>Rashi (Pesachim 107a s.v. mincha gedola), Rambam (Tefillah 3:2)</ref>


===Mincha Ketana===
===Mincha Ketana===


#Mincha Ketana is nine and a half halachic hours (Shaot Zmaniyot) after sunrise.<ref>Rashi (Pesachim 107b s.v. oh), Rambam (Tefillah 3:2)</ref>
#Mincha Ketana is nine and a half halachic hours (Shaot Zmaniot) after sunrise.<ref>Rashi (Pesachim 107b s.v. oh), Rambam (Tefillah 3:2)</ref>


===Shekiyah (Sunset)===
===Shekiyah (Sunset)===
Line 124: Line 124:
===Tzet HaKochavim (Emergence of the stars)===
===Tzet HaKochavim (Emergence of the stars)===


#There's a major dispute when Tzet HaKochavim is: Rabbenu Tam assumes that it's about 72 minutes after [[Shekiyah]] and the Gra assumes that it's three quarters of a [[mil]] after [[Shekiyah]], varying according to one's locations. <ref>Rabbi Hershel Schachter on [http://www.yutorah.org/lectures/lecture.cfm/728553/Rabbi_Hershel_Schachter/Shiur_on_Zmanim_in_Halacha# yutorah.org (min 43-5)] explains that many practice like the Gra regarding Tzet HaKochavim on [[Motzei Shabbat]]. See Biur HaGra and Mishna Brurah 261. Pri Megadim assumes that according to Rabbenu Tam, 72 minutes is a fixed time, but Mishna Brurah writes that it varies according to one's location.</ref>
#There's a major dispute when Tzet HaKochavim is: Rabbenu Tam assumes that it's about 72 minutes after [[Shekiyah]] and the Gra assumes that it's three quarters of a [[mil]] after [[Shekiyah]], varying according to one's location. <ref>Rabbi Hershel Schachter on [http://www.yutorah.org/lectures/lecture.cfm/728553/Rabbi_Hershel_Schachter/Shiur_on_Zmanim_in_Halacha# yutorah.org (min 43-5)] explains that many practice like the Gra regarding Tzet HaKochavim on [[Motzei Shabbat]]. See Biur HaGra and Mishna Brurah 261. Pri Megadim assumes that according to Rabbenu Tam, 72 minutes is a fixed time, but Mishna Brurah writes that it varies according to one's location.</ref>


===Bein HaShemashot===
===Bein HaShemashot===


#[[Bein HaShemashot]] is the time period between certain daytime and certain nighttime. In many halachot, it is considered a doubt whether it is considered day or night and has many practical ramifications. There is a major dispute how long this period is. <ref>*'''(1) Gemara [[Shabbat]]''' 34b says [[Bein HaShemashot]] is considered as a doubt whether it is considered daytime or nighttime. When is [[Bein HaShemashot]]? Rabbi Yehuda says that [[Bein HaShemashot]] starts from [[Shekiyah]] and concludes when the entire ball of the sun has set. Rabbi Yose, however, says that [[Bein HaShemashot]] is as short as the blink of an eye, though R. Yose also agrees that there is a doubt (Tosfot 34b s.v. Rabbi Yose). R. Nechemya says that it is from [[Shekiyah]] and lasts the length of time it takes to walk a half [[mil]]. [Note, a mil is 2000 amot (see above).]
#[[Bein HaShemashot]] is the time period between certain daytime and certain nighttime. In many halachot, it is considered a ''safek,'' or doubt, whether it is considered day or night and has many practical ramifications. There is a major dispute regarding the length of this period. <ref>*'''(1) Gemara [[Shabbat]]''' 34b says [[Bein HaShemashot]] is considered as a doubt whether it is considered daytime or nighttime. When is [[Bein HaShemashot]]? Rabbi Yehuda says that [[Bein HaShemashot]] starts from [[Shekiyah]] and concludes when the entire ball of the sun has set. Rabbi Yose, however, says that [[Bein HaShemashot]] is as short as the blink of an eye, though R. Yose also agrees that there is a doubt (Tosfot 34b s.v. Rabbi Yose). R. Nechemya says that it is from [[Shekiyah]] and lasts the length of time it takes to walk a half [[mil]]. [Note, a mil is 2000 amot (see above).]
*'''Explanation of Rabbi Yehuda's opinion:''' Rabba explains Rabbi Yehuda as saying that [[Bein HaShemashot]] starts from [[Shekiyah]] even though the sky is still red, while Rav Yosef says [[Bein HaShemashot]] starts from when the sun already set. It follows, says the Gemara, that according to Rabba the span of [[Bein HaShemashot]] is 3/4 of a [[mil]] and according to Rav Yosef [[Bein HaShemashot]] is 2/3 of a [[mil]].
*'''Explanation of Rabbi Yehuda's opinion:''' Rabba explains Rabbi Yehuda as saying that [[Bein HaShemashot]] starts from [[Shekiyah]] even though the sky is still red, while Rav Yosef says [[Bein HaShemashot]] starts from when the sun already set. It follows, says the Gemara, that according to Rabba the span of [[Bein HaShemashot]] is 3/4 of a [[mil]] and according to Rav Yosef [[Bein HaShemashot]] is 2/3 of a [[mil]].
*'''Who do we follow, Rabba or Rav Yosef, in explaining Rabbi Yehuda?''' The Rif (15a) writes that since it is unclear whether halacha follows Rav Yosef or Rabba, one should be strict to follow Rabba that [[Bein HaShemashot]] begins at [[Shekiyah]]. Then he says that it seems halacha should follow Rabba because halacha always follows Rabba with three exceptions and this isn't one of them. Similarly, Rambam ([[Shabbat]] 5:4) rules like Rabba that [[Bein HaShemashot]] begins at [[Shekiyah]]. Rabbenu Yonah (quoted by Rosh [[Shabbat]] 2:23) argues that since they're not arguing about which logic is correct but about what Rav Yehuda said the halacha follows both Rabba and Rav Yosef, whichever way will be a stringency. Therefore, in context of [[accepting Shabbat]], Rama 261:1 rules like Rabba that [[Bein HaShemashot]] is 3/4 of a [[mil]].
*'''Who do we follow, Rabba or Rav Yosef, in explaining Rabbi Yehuda?''' The Rif (15a) writes that since it is unclear whether halacha follows Rav Yosef or Rabba, one should be strict to follow Rabba that [[Bein HaShemashot]] begins at [[Shekiyah]]. Then he says that it seems halacha should follow Rabba because halacha always follows Rabba with three exceptions and this isn't one of them. Similarly, Rambam ([[Shabbat]] 5:4) rules like Rabba that [[Bein HaShemashot]] begins at [[Shekiyah]]. Rabbenu Yonah (quoted by Rosh [[Shabbat]] 2:23) argues that since they're not arguing about which logic is correct but about what Rav Yehuda said the halacha follows both Rabba and Rav Yosef, whichever way will be a stringency. Therefore, in context of [[accepting Shabbat]], Rama 261:1 rules like Rabba that [[Bein HaShemashot]] is 3/4 of a [[mil]].
Line 137: Line 137:
*'''Does halacha follow Rabbenu Tam?''' The Shulchan Aruch 261:2 rules in accordance with Rabbenu Tam and states that from the beginning of the [[Shekiyah]] until [[Bein HaShemashot]] there's 3.25 [[mil]] and then [[Bein HaShemashot]] itself is .75 of a [[mil]], which is equivalent to the time it takes to walk 1500 [[amot]]. Beiur Halacha 261 s.v. Metechila writes that for sure one should be strict for the Gra not to do any melacha after sunset.
*'''Does halacha follow Rabbenu Tam?''' The Shulchan Aruch 261:2 rules in accordance with Rabbenu Tam and states that from the beginning of the [[Shekiyah]] until [[Bein HaShemashot]] there's 3.25 [[mil]] and then [[Bein HaShemashot]] itself is .75 of a [[mil]], which is equivalent to the time it takes to walk 1500 [[amot]]. Beiur Halacha 261 s.v. Metechila writes that for sure one should be strict for the Gra not to do any melacha after sunset.
*'''(3) Shmuel's opinion:''' Then, Shmuel ([[Shabbat]] 35b) says that [[Bein HaShemashot]] is as long as two stars are seen in the sky, but if there’s only one star, it’s day, and if it’s three, then it’s night. The Gemara then clarifies that the stars which were discussed are medium size stars. Similarly, the Yerushalmi ([[Brachot]], cited by Ran 15a) says that [[Shabbat]] concludes when three stars can be seen in one area and not spread out. The Rambam ([[Shabbat]] 5:4) rules like Shmuel that when three medium size stars are seen it is certain nighttime. The Kesef Mishna ([[Shabbat]] 5:4) is bothered why the Rambam said that [[Bein HaShemashot]] begins from [[Shekiyah]] and ends when three stars are seen, choosing the opinion of Rabba for the beginning of [[Bein HaShemashot]] and Shmuel for the end of [[Bein HaShemashot]]. He answers that really Rabba and Shmuel agree and just describe it differently. This may also be the intent of the Rif (15a) and Rosh 2:23 who say that halacha follows Rabba as a stringency and also quote Shmuel without anyone arguing. See Or Letzion Vol. 1 YD 1:10 who offers a novel interpretation of the opinion of the Rambam that he holds like Rabbi Yose (see there for the halachic implications). See also Beur Halacha 416 who paskens like Rabbi Yose MeIkar HaDin, as well, and Chazon Ovadia Shabbat Vol. 1 pp. 264.</ref>
*'''(3) Shmuel's opinion:''' Then, Shmuel ([[Shabbat]] 35b) says that [[Bein HaShemashot]] is as long as two stars are seen in the sky, but if there’s only one star, it’s day, and if it’s three, then it’s night. The Gemara then clarifies that the stars which were discussed are medium size stars. Similarly, the Yerushalmi ([[Brachot]], cited by Ran 15a) says that [[Shabbat]] concludes when three stars can be seen in one area and not spread out. The Rambam ([[Shabbat]] 5:4) rules like Shmuel that when three medium size stars are seen it is certain nighttime. The Kesef Mishna ([[Shabbat]] 5:4) is bothered why the Rambam said that [[Bein HaShemashot]] begins from [[Shekiyah]] and ends when three stars are seen, choosing the opinion of Rabba for the beginning of [[Bein HaShemashot]] and Shmuel for the end of [[Bein HaShemashot]]. He answers that really Rabba and Shmuel agree and just describe it differently. This may also be the intent of the Rif (15a) and Rosh 2:23 who say that halacha follows Rabba as a stringency and also quote Shmuel without anyone arguing. See Or Letzion Vol. 1 YD 1:10 who offers a novel interpretation of the opinion of the Rambam that he holds like Rabbi Yose (see there for the halachic implications). See also Beur Halacha 416 who paskens like Rabbi Yose MeIkar HaDin, as well, and Chazon Ovadia Shabbat Vol. 1 pp. 264.</ref>
#The Gemara rules that if one does a Melacha on [[Shabbos]] for the duration of Bein Hashemashos on Friday evening and Saturday evening, one has certainly violated [[Shabbos]], and must bring a sin-offering <ref>[[Shabbos]] 35b, Rambam (Hilchot [[Shabbos]] 5:4). This is because if one treats [[Bein Hashemashot]] as day, one broke [[Shabbos]] on Saturday evening. If one treats [[Bein Hashemashot]] as night, one violated [[Shabbos]] on Friday evening. </ref>
#The Gemara rules that if one does a Melacha on [[Shabbos]] for the duration of Bein Hashemashos on Friday evening and Saturday evening, one has certainly violated [[Shabbos]], and must bring a sin-offering. <ref>[[Shabbos]] 35b, Rambam (Hilchot [[Shabbos]] 5:4). This is because if one treats [[Bein Hashemashot]] as day, one broke [[Shabbos]] on Saturday evening. If one treats [[Bein Hashemashot]] as night, one violated [[Shabbos]] on Friday evening. </ref>
#Therefore, one can do no Melacha during [[Bein Hashemashot]] <ref>Mishnah [[Shabbos]] 34b </ref>.
#Therefore, one cannot perform Melacha during [[Bein Hashemashot]]. <ref>Mishnah [[Shabbos]] 34b </ref>


==Miscellaneous==
==Miscellaneous==
Retrieved from "http://localhost:80/index.php?title=Special:MobileDiff/23124"