Sayyiduna Jabir (may Allah be pleased with him) narrates: When the construction of the Ka'bah began, the Prophet Muhammad (peace and blessings be upon him) and Sayyiduna Abbas (may Allah be pleased with him) started carrying stones. Sayyiduna Abbas (may Allah be pleased with him) said to the Prophet Muhammad (peace and blessings be upon him): "Place your waistcloth on your neck." The Prophet Muhammad (peace and blessings be upon him) did so, and then he fell to the ground and his eyes turned towards the sky. Then he stood up and said: "My waistcloth, my waistcloth." Then he tied his waistcloth around himself.