Sahih Muslim 1302
صحيح مسلم#1302SahihAbu Huraira reported:The Messenger of Allah (ﷺ) prostrated himself (while reciting these verses)." When the heaven burst asunder" ;" Read in the name of Thy Lord
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 5:140