Sahih Muslim 611
صحيح مسلم#611Sahihحَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ بْنِ قَعْنَبٍ، حَدَّثَنَا سُلَيْمَانُ، - يَعْنِي ابْنَ بِلاَلٍ - عَنْ يَحْيَى بْنِ سَعِيدٍ، عَنْ مُحَمَّدِ بْنِ يَحْيَى، عَنْ عَمِّهِ، وَاسِعِ بْنِ حَبَّانَ، قَالَ كُنْتُ أُصَلِّي فِي الْمَسْجِدِ وَعَبْدُ اللَّهِ بْنُ عُمَرَ مُسْنِدٌ ظَهْرَهُ إِلَى الْقِبْلَةِ فَلَمَّا قَضَيْتُ صَلاَتِي انْصَرَفْتُ إِلَيْهِ مِنْ شِقِّي فَقَالَ عَبْدُ اللَّهِ يَقُولُ نَاسٌ إِذَا قَعَدْتَ لِلْحَاجَةِ تَكُونُ لَكَ فَلاَ تَقْعُدْ مُسْتَقْبِلَ الْقِبْلَةِ وَلاَ بَيْتِ الْمَقْدِسِ - قَالَ عَبْدُ اللَّهِ - وَلَقَدْ رَقِيتُ عَلَى ظَهْرِ بَيْتٍ فَرَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم قَاعِدًا عَلَى لَبِنَتَيْنِ مُسْتَقْبِلاً بَيْتَ الْمَقْدِسِ لِحَاجَتِهِ .
Wasi' b. Habban reported:I was offering my prayer in the mosque and Abdullah b. Umar was sitting there reclining with his back towards the Qibla. After completing my prayer. I went to him from one side. Abdullah said: People say when you go to the latrine, you should neither turn your face towards the Qibla nor towards Bait-ul-Maqdis. 'Abdullah said (farther): I went up to the roof of the house and saw the Messenger of Allah (ﷺ) squatting on two bricks for relieving himself with his face towards Bait-al-Maqdis
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 2:78