Hadith 3720
Abu Saeed Al-Khudri said: The Messenger of Allah ﷺ prohibited drinking by inverting the heads of skin vessels.
Hadith 3721
A man of the Ansar quoting from his father said that the Prophet ﷺ called for a skin-vessel on the day of the battle of Uhud. He then said: Invert the head of the vessel and he drank from its mouth.