question #3 Sahih Muslim 1276, Book 15, Hadith 284 : What significance does the recitation of specific Quranic chapters hold during prayer according to the practices of the Prophet Muhammad (ﷺ)?

I made a complaint to Allah’s Messenger (ﷺ) of my ailment, whereupon be said: Circumambulate behind the people while riding. She said: So I circumambulated and Allah’s Messenger (ﷺ) was at that time praying towards the side of the House and he was reciting al-Tur and a Book Inscribed (i. e. Sura Iii. of the Qur’un).