It is narrated from Hazrat Anas (may Allah be pleased with him) that once the Prophet (peace and blessings be upon him) came to the house of Hazrat Umm Sulaym (may Allah be pleased with her). There was a water-skin hanging in the house. The Prophet (peace and blessings be upon him) stood and drank water directly from its mouth. Umm Sulaym (may Allah be pleased with her) cut off the mouth of the water-skin (for the sake of blessing) and kept it with her, and it is still with us today.