Sahih al-Bukhari 289
صحيح البخاري#289SahihNarrated `Abdullah:`Umar asked the Prophet (ﷺ) "Can anyone of us sleep while he is Junub?" He replied, "Yes, if he performs ablution
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 5:41