Sahih Muslim 3103
صحيح مسلم#3103SahihUsama b. Zaid (Allah be pleased with him) reported that when Allah's Messenger (may peace jbe upod him) came to the valley where the rich (people of Mecca) used to get down. he got down. and urinated (and he did not mention about pouring water) ; he then called for water and performed a light ablution. I said:Messenger of Allah, the prayer I Thereupon he said: Prayer awaits you ahead
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: 15:308