“Al-Qa’im will come from the defile of Mountain Thi Tuwa with three hundred and thirteen men as the number of the Muslims, who have fought in the battle of Badr. He will lean his back against the Black Rock (in the Kaaba) and will shake his victorious banner.” Ali bin Abu Hamza said: “I mentioned that to Abul Hasan Musa bin Ja’far al-Kadhim (as) and he said: “It is an evidenced book.”