question #3 Sahih Muslim 730e, Book 6, Hadith 133 : How does the Prophet’s practice of prayer reflect on the permissibility of praying while sitting or standing?

I asked ‘A’isha about the prayer of the Messenger of Allah (ﷺ). She said: The Messenger of Allah (ﷺ) would observe prayer (Nafl) in a standing position as well as in a sitting position, and when he commenced the prayer in a standing position, he bowed in this very position, and when he commenced the prayer in a sitting position, he bowed in this very position.