Biur Chametz: Difference between revisions

# If one sold one’s Chametz one shouldn’t do Biur Chametz until after the Rabbi sells the Chametz to the goy which is usually done at the beginning of the 5th hour of the day. <Ref> Rav Hershel Schachter on [http://www.ou.org/torah/article/oukosher_pre-pesach_webcast_5771 OU Pre-Pesach Webcast 5771] between minutes 28:30 and 30:15. Rabbi Hershel Schacter in “Halachos of Pesach,” a shiur on yutorah.org, (min 3-6) says the same concept. This is also written in his sefer B'ikvei HaTzon p. 76. See, however, Rabbi Mordechai Willig in Am Mordechai (Moadim) who defends the practice of those who burn it earlier. See [http://www.hebrewbooks.org/pagefeed/hebrewbooks_org_13070_102.pdf an article in Kovetz Aharon VeYisrael] about whether one fulfills Tashbitu with selling his chametz to a non-Jew.</ref>

# The burning and the bitul of the chametz should be finished by the end of the fifth hour. <ref> Shulchan Aruch 434:2, Mishna Berura 434:12, Kaf Hachayim 434:38-40. </ref>Some say that one should specifically burn it at the beginning of the fifth hour. <Ref> Piskei Teshuvot 445:3. The gemara in pesachim 21a says that from the torah chametz is only forbidden at mid-day, the rabbis made it two hours earlier because people might get confused with the hours. Rambam Chametz U'matza 1:9. </ref>

#The nullification during the day should be done before the sixth hour, so that the chametz that you nullify is still yours when you nullify it. <ref> Shulchan Aruch 434:2 </ref> but after the burning. <ref> Rama 434:2. According to Rav Yaakov Emden in Mor Uketzia 434 one can do the bitul before the burning even lechatchila. </ref>

#If one leaves his house, he should still do bitul when the time comes. <ref> Shulchan Aruch 236:1. </ref>