Musannaf Ibn Abi Shaybah 39612 — The Hudaybiyah campaign

It is narrated from Sayyiduna al-Bara' bin Azib (may Allah be pleased with him): When we camped on the day of al-Hudaybiyah, we found its well in such a state that the people before us had already drunk from it. He (peace and blessings be upon him) sat on the edge of the well, then he (peace and blessings be upon him) called for a bucket from it, took some water from it into his blessed mouth, spat that water back into the bucket and supplicated to Allah. The water of the well then became so abundant that all the people drank their fill from it.