Sunan Ibn Majah 537
سنن ابن ماجه#537SahihIt was narrated that 'Aishah said:"I often scraped it (semen) from the garment of the Messenger of Allah with my hand
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Muslim
In-book reference: 1:271