Sayyiduna Abu Juhayfah (may Allah be pleased with him) said: When the Day of Nafr (the day of departure from Mina) came, we halted at al-Abtah. The Messenger of Allah (peace and blessings be upon him) ordered Sayyiduna Bilal (may Allah be pleased with him), and he called to the prayer; then he came out with the water of the ablution of the Messenger of Allah (peace and blessings be upon him), and the people rushed upon it: some obtaining some of it and some being sprinkled with it. Then he brought out a short spear and planted it between himself and the road.
Hadith Referenceالمعجم الكبير للطبراني / باب الواو / 18487