Sunan an-Nasa'i 23
سنن النسائي#23SahihIt was narrated that 'Abdullah bin 'Umar said:"I climbed on the roof of our house and saw the Messenger of Allah (ﷺ) on two bricks, facing toward Bait Al-Maqdis (jerusalem), relieving himself
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 1:23