Musannaf Ibn Abi Shaybah

It is narrated from Hazrat Anas that the Noble Prophet Muhammad (peace and blessings be upon him) entered the house of Hazrat Umm Sulaym, and there was a water-skin hanging in the house. The Prophet (peace and blessings be upon him) drank water from its mouth while he was standing.

It is narrated about Hazrat Ibn Abbas (may Allah be pleased with them) that he saw no harm in drinking from the mouth of a vessel.

It is narrated from Hazrat Saeed bin Jubair that he said: I saw Hazrat Ibn Umar (may Allah be pleased with them) drinking from the mouth of a vessel.

It is narrated from Hazrat Nafi' that Hazrat Ibn Umar (may Allah be pleased with them) used to drink water directly from the mouth of a waterskin.

It is narrated from Hazrat Abbad bin Mansoor, he says that I saw Hazrat Salim bin Abdullah drinking from the mouth of a vessel (by putting his mouth on it).