It is narrated from Hazrat Jabir bin Abdullah (may Allah be pleased with him). He says that the Messenger of Allah (peace and blessings be upon him) went to the house of a man from among the Ansar. That person was making a water channel for his garden, and he had a companion with him. The Prophet (peace and blessings be upon him) said: "Do you have any water that has been kept in a vessel or something similar since last night? Otherwise, we will drink directly (from the stream) with our mouths."