Abu Sa'id (Khudri) reported that Allah's Messenger (ﷺ) forbade from turning the waterskins upside down and drinking from its mouth.
Sahih Muslim Book 36, Hadith 145
← Previous Hadith I (had the opportunity) one day to dine with Allah's Messenger (ﷺ), and I picked up flesh from around the dish. Thereupon Allah's Messenger (ﷺ) said: Eat from that which is near to you.

Sahih Muslim Book 36, Hadith 144 Next Hadith → Abu Sa'id Khudri reported that Allah's, Messenger (may peace he upon him) forbade from turning the waterskins upside down and drinking from their mouths.

Sahih Muslim Book 36, Hadith 146