It is narrated from Sayyiduna Amr bin Awf al-Muzani (may Allah be pleased with him) that we were sitting around the Messenger of Allah (peace and blessings be upon him) in his mosque when he (peace and blessings be upon him) said: "You will surely follow the ways of those before you, step by step, and you will surely take as they took: if a hand-span, then a hand-span; if a cubit, then a cubit; if an arm's length, then an arm's length; to the extent that if they entered the hole of a lizard (dabb), you would enter it too. Listen! The Children of Israel split in the time of Musa (peace be upon him) into seventy (70) sects, all of them astray except one, and that one was Islam and their Jama'ah. Then they split in the time of Isa (peace be upon him) into seventy-one (71) sects, all astray except one, and that one was Islam and their Jama'ah. Then you will split into seventy-two (72) sects, all of them astray except one, and that one will be Islam and their Jama'ah." This is the end of the "Book of Knowledge".