Muhammad bin Imran Ansari narrates from his father: Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) looked back at me while I was camping under a large tree on the way to Makkah. He asked, "Why have you camped under this large tree?" I replied, "I wanted to come under its shade." He asked, "Is there any other reason besides this?" I said, "No, nothing else compelled me to camp here." Then Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) informed me that the Prophet Muhammad (peace and blessings be upon him) said: "When you are between the two mountains of Mina," the Prophet (peace and blessings be upon him) pointed towards the east with his blessed hand and said, "There is a valley there called 'Sarr.' There is a tree under which seventy [70] prophets camped."