Sunan Ibn Majah 541
سنن ابن ماجه#541Da'ifIt was narrated that Abu Darda' said:"The Messenger of Allah came out to us with water dripping from his head, and he led us in prayer wearing a single garment, placing its one end on the right shoulder, and the other end on the other shoulder. When he finished praying, 'Umar bin Khattab said to him: 'O Messenger of Allah, did you lead us in prayer wearing a single garment? He said: 'Yes, I perform prayer in it, and in it I (i.e. I had sexual intercourse in it)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniHasan
Muhammad Fouad Abd al-BaqiHasan Lighairihi
Zubair Ali ZaiDaif
In-book reference: 1:275