The Messenger of Allah ﷺ forbade drinking from the mouths of waterskins.
حدثنا مسدد حدثنا سفيان عن الزهري أنه سمع عبيد الله ابن عبد الله
أن رسول الله ﷺ نهى عن اختناث الأسقية
No references are available.
Muslim narrated it in "The Book of Drinks," chapter on the etiquettes and rulings of food and drink, hadith 2023, from the hadith of Sufyan bin Uyayna. Bukhari narrated it in "The Book of Drinks," chapter on drinking from a waterskin with a bent or folded neck, hadith 5625, from the hadith of Zuhri.