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I have heard in the name of the Chasam Sofer that if one sleeps after eating meat that they can be lenient in the amount of time one would normally wait between eating meat and milk. Is this written anywhere? Which other poskim discussed this?

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up vote 10 down vote accepted

The sefer "Zikaron L'Moshe" (pg. 65) writes that the Chasam Sofer originally understood that the reason one must wait six hours after meat, is because that is how long it takes to digest the food, and therefore this only applies to one who ate a meal in the day. However, when one sleeps the food digests quicker, and he may eat milk even before six hours are up. Based on this reasoning, the Chasam Sofer prepared himself a cup of coffee to drink, but when he picked it up the cup broke and the coffee spilt, which the Chassam Sofer took as a Divine sign that he was incorrect and the full wait time applies even after sleeping.

For additional sources that discuss this see: Piskey Teshuva 3:285, Da'as Kedoshim YD 89:2, Beis Avi 3:108, Teshuvos Vehanhagos 1:431

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Amazing find! Tell me something: in the parenthesised section that interrupts that narrative, the author mentions having found certain relevant information "בסידור הגדול דהתניא זי"ע". The Tanya?? Is he referring to the siddur of the Baal haTanya, and referring to its author as "the Tanya"? – Shimon bM Apr 10 '13 at 11:41
@ShimonbM I find it much more likely that he is refering to תניא רבתי. – Michoel Apr 10 '13 at 13:36

I heard that Rav Elyashiv zt"l held this way, and that it was halakha l'maaseh for him because he slept for less than six hours.

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Did he also regularly eat meat right before bed and drink milk right upon awaking? Unlikely... – Double AA Oct 6 '14 at 7:43
@DoubleAA what does "regularly" have to do with it? If he once in his life went to a late night chasuna and wanted coffee when he woke up, it would be "l'maaseh for him" – Y ez Oct 6 '14 at 15:00
"The Steipler Gaon is quoted as remarking that this leniency is the exclusive domain of Rav Elyashiv, as most people sleep six hours a night and he only sleeps three hours nightly." ohr.edu/this_week/insights_into_halacha/5206 – Rentsy Oct 6 '14 at 16:59
@YEZ I assumed the unique thing about RYSE was that he apparently slept less than 6 hours on a regular basis. Almost everyone in the world has on one occasion slept less than 6 hours due to a late night X so that doesn't seem so special. – Double AA Oct 6 '14 at 17:57
@DoubleAA I think the previous comment from Rentsy makes this a moot discussion - if he only slept 3 hours regularly, that gives a nice 3 hour window to have had fleishigs before going to sleep. – Y ez Oct 6 '14 at 18:00

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