View source for Waking up in the Middle of the Night

==One isn't going back to sleep==
# If one wakes up in the middle of the night and doesn't plan on going back to sleep, according to Sephardim, one should wash Netilat Yadayim with a bracha and say Brachot HaTorah. <ref> Or Letzion (vol 2 chap 1 note 2) writes that if one isn't going back to sleep one should make the Netilat Yadayim with a bracha right away. </ref> according to Ashkenazim, if after having going to the bathroom one will still not be ready for davening and will have to go to the bathroom another time before davening (as is common when one wakes up a long time before davening), one should upon waking wash without a bracha, after having gone to the bathroom the first time wash without a bracha, and after having gone to the bathroom a second time and one is ready for davening wash with the bracha of Al Netilat Yadayim. Some say that one should wash the first times without a cup. <ref>
* If one is not going to be ready for davening after having gone to the bathroom the first time, the Biur Halacha (4:1 D"H Afliu) presents two opinions about when it is preferable to wash one's hands with the bracha of Al Netilat Yadayim. The Chaye Adam holds that it's preferable upon waking up to wash without a bracha and when one's ready for davening to wash again with the bracha, while the Shaarei Teshuva holds that one should wash with the bracha after going to the bathroom even if one isn't totally ready for davening. The Biur Halacha rules like the Chaye Adam that upon waking up one should wash without a bracha and when one is ready for davening to wash again with the bracha. 
* Rav Shlomo Zalman is quoted in Halichot Shlomo (Tefilla 2:23, pg 23) rules like the Chaye Adam and states when one is washing one's hands after having gone to the bathroom in the morning if one knows that one will need to go to the bathroom again before Davening the first time one should wash without a bracha and after going to the bathroom the second time when one is ready for davening one should wash with the bracha. 
* Rav Mordechai Willig in Am Mordechai (Brachot, Siman 11, pg 45-8) writes that one should go to the bathroom, wash without a cup, and then when one is ready for davening to wash again with a cup and make the bracha of Al Netilat Yadayim. </ref>

==One plans to go back to sleep==
# If one woke up to got to the bathroom, one should wash one's hands without a bracha and don't make Brachot HaTorah. <ref> Or Letzion (vol 2 chap 1:2) writes that if one is going back to sleep and one only woke up temporarily to go to the bathroom, one should make the Netilat Yadayim without a bracha. </ref>
# If one woke up to got to say Tikkun Chatzot or to learn a little but plans to go back to sleep, one should wash one's hands with a bracha and make Brachot HaTorah. <ref> Or Letzion (vol 2 chap 1:2) writes that if one is going back to sleep and one woke up to say Tikkun Chatzot or to learn, one should make the Netilat Yadayim without a bracha prior to Brachot HaShachar. </ref>

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