Sahih Muslim 1295
صحيح مسلم#1295SahihIbn 'Umar reported:The Messenger of Allah (ﷺ) while reciting the Qur'an recited its surah containing sajda, and he performed prostration and we also prostrated along with him (but we were so overcrowded) that some of us could not find a place for our forehead (when prostrating ourselves)
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: 5:133