question #1 Sahih Muslim 738e, Book 6, Hadith 156 : How many rak’ahs did the Prophet Muhammad (ﷺ) pray during the night?

It is reported on the authority of ‘A’isha that the prayer of Allah’s Messenger (ﷺ) in the night consisted of ten rak’ahs. He observed a Witr and two rak’ahs (of Sunan) of the dawn prayer, and thus the total comes to thirteen rak’ahs.