Hazrat Jabir narrates that Hazrat Umar bin Khattab brought a page from the book of the People of the Book to the Noble Prophet (peace and blessings be upon him) and said: O Messenger of Allah (peace and blessings be upon him)! I have found a very good book from the People of the Book. The narrator says: The Prophet (peace and blessings be upon him) became angry and said: O Ibn Khattab! Are you still astonished about this? By Him in Whose hand is my soul, indeed I have brought to you a clear and radiant religion. Do not ask the People of the Book about anything, for they may tell you something true and you will deny it, or they may tell you something false and you will affirm it. By Him in Whose hand is my soul, if Musa (Moses) were alive today, he would have no choice but to follow me.