Say to them, "Whoever is enemy to Gabriel, should understand that he has, by Allah's command, revealed to your heart the Qur'an which confirms what was revealed before it, and brings Guidance and glad tidings to the Believers. 97 Whosoever is an enemy unto Allah and His angels and His apostles and Jibril and Mikail, then verily Allah is an enemy unto the infidels. 98 (Muhammad) We have given you enlightening authority. Only the wicked sinners deny it. 99 Is it not so that every time they made a promise [unto God,] some of them cast it aside? Nay, indeed: most of them do not believe. 100 When a Messenger of God came to them confirming the (original) revelation that they already had received, a group of those who had the Scripture with them, threw the Book of God behind their backs as if they did not know anything about it. 101 And they follow that which the satans recited in the reign of Sulaiman; and Sulaiman blasphemed not, but the satans blasphemed; teaching people magic; and they follow that also which was sent down unto the two angels in Babil, Harut and Marut. Unto none the twain taught it until they had said: we are but a temptation, so blaspheme not. But they learned from the twain that wherewith they might separate man from his wife; and they could harm none thereby save by Allah's will. And they have learnt that which harmeth them, and profiteth them not; and assuredly they know that whosoever purchaseth it, his is no portion in the Hereafter; and surely vile is the price for which they have bartered themselves, if they but knew! 102 And if they had believed, and guarded themselves from evil and kept their duty to Allah, far better would have been the reward from their Lord, if they but knew! 103