It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that Muhammad (peace be upon him) used to stand with his cousins, while they were young, near the Ka'bah, by the idol whose name was Isaf. Then Muhammad (peace be upon him) raised his head towards the back of the Ka'bah, so his cousins said to him: What is the matter with you? He (peace be upon him) said: "I have been forbidden to stand by the idol."