The Book of Drinks
وَحَدَّثَنَا 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
From Sahih Muslim, whose reports the scholars accept as authentic.