Musannaf Ibn Abi Shaybah 14706 — The virtue of Zamzam

Qays bin Karkam said: I asked Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both): "Tell me about Zamzam water." He said: "I will tell you with knowledge: it is not drawn out until empty, it does not run dry, and it is not dispraised. It is food for the one who eats and a cure for sickness."