Muwatta Malik 456
موطأ مالك#456Sahihوَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، عَنْ رَجُلٍ، مِنَ الأَنْصَارِ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم نَهَى أَنْ تُسْتَقْبَلَ الْقِبْلَةُ لِغَائِطٍ أَوْ بَوْلٍ .
Yahya related to me from Malik from one of the Ansar that the Messenger of Allah, may Allah bless him and grant him peace, forbade defecating or urinating while facing the qibla
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Salim al-HilaliSahih Lighairihi
In-book reference: 14:2