question #2 Sahih Muslim 746f, Book 6, Hadith 173 : How did the Prophet Muhammad (ﷺ) manage his acts of worship when faced with illness or lack of sleep?

‘A’isha reported that when the Messenger of Allah (ﷺ) decided upon doing any act, he continued to do it, and when he slept at night or fell sick he observed twelve rak’ahs during the daytime. I am not aware of Allah’s Messenger (ﷺ) observing prayer during the whole of the night till morning, or observing fast for a whole month continuously except that of Ramadan.