Sunan an-Nasa'i 41
سنن النسائي#41Sahihأَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا أَبُو مُعَاوِيَةَ، قَالَ حَدَّثَنَا الأَعْمَشُ، عَنْ إِبْرَاهِيمَ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ يَزِيدَ، عَنْ سَلْمَانَ، قَالَ قَالَ لَهُ رَجُلٌ إِنَّ صَاحِبَكُمْ لَيُعَلِّمُكُمْ حَتَّى الْخِرَاءَةَ . قَالَ أَجَلْ نَهَانَا أَنْ نَسْتَقْبِلَ الْقِبْلَةَ بِغَائِطٍ أَوْ بَوْلٍ أَوْ نَسْتَنْجِيَ بِأَيْمَانِنَا أَوْ نَكْتَفِيَ بِأَقَلَّ مِنْ ثَلاَثَةِ أَحْجَارٍ .
It was narrated that Salman said, that a man said to him:"Your companion (meaning, the Prophet(ﷺ)) even teaches you how to go to the toilet!" He said: "Yes, he forbade us from facing the Qiblah when defecating or urinating, or cleaning ourselves with out right hands, or to use less than three stones
Scholarly Authentication
The label above is the grade most of these scholars gave, each scholar counted once — 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. When they judged only its chain of narrators (“Isnaad”), the label says “Sound chain”. Each scholar's own wording:
Our source also lists this ruling under Abu Ghuddah, the editor of the printed edition it was taken from. It is al-Albani's ruling printed again, so it is counted once.
In-book reference: 1:41