It is narrated from Sayyiduna Ibn Amr (may Allah be pleased with him) that I heard the Noble Prophet (peace and blessings be upon him) say: A black man with thin shins will destroy the Ka'bah, he will seize its ornaments and strip off its covering. It is as if I am seeing him with my own eyes: his front hair is fallen, his joints are crooked, and he is striking the Ka'bah with a pickaxe and a spade.