Sahih Muslim 5271
صحيح مسلم#5271Sahihوَحَدَّثَنَا عَمْرٌو النَّاقِدُ، حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، عَنِ الزُّهْرِيِّ، عَنْ عُبَيْدِ اللَّهِ، عَنْ أَبِي سَعِيدٍ، قَالَ نَهَى النَّبِيُّ صلى الله عليه وسلم عَنِ اخْتِنَاثِ الأَسْقِيَةِ .
Abu Sa'id (Khudri) reported that Allah's Messenger (ﷺ) forbade from turning the waterskins upside down and drinking from its mouth
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: 36:145