Sahih Muslim 669
صحيح مسلم#669SahihAl-Aawad and Hammam reported A'isha as saying:I used to scrape off the (drop of) semen from the garment of the Messenger of Allah (ﷺ)
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: 2:135