Sunan Ibn Majah 664
سنن ابن ماجه#664Da'ifIt was narrated that 'Ali said:"A man came to the Prophet and said: 'I bathed to cleanse myself from sexual impurity, and I prayed Fajr, then I noticed a spot the size of a fingernail that the water did not reach.' The Messenger of Allah said: 'If you had wiped it that would have been sufficient for you
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniVery Daif
Muhammad Fouad Abd al-BaqiDaif
Shuaib Al ArnautDaif
Zubair Ali ZaiDaif
In-book reference: 1:398