Sunan Ibn Majah 320
سنن ابن ماجه#320Sahihحَدَّثَنَا الْعَبَّاسُ بْنُ الْوَلِيدِ الدِّمَشْقِيُّ، حَدَّثَنَا مَرْوَانُ بْنُ مُحَمَّدٍ، حَدَّثَنَا ابْنُ لَهِيعَةَ، عَنْ أَبِي الزُّبَيْرِ، عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ، حَدَّثَنِي أَبُو سَعِيدٍ الْخُدْرِيُّ، أَنَّهُ شَهِدَ عَلَى رَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ أَنَّهُ نَهَى أَنْ نَسْتَقْبِلَ الْقِبْلَةَ بِغَائِطٍ أَوْ بِبَوْلٍ .
It was narrated from Jabir bin 'Abdullah:"Abu Sa'eed Al-Khudri narrated to me, that he bears witness that the Messenger of Allah forbade facing the Qiblah when defecating or urinating
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:
In-book reference: 1:54