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 to God and His angels and His Messengers, and Gabriel, and Michael - surely God is an enemy to the unbelievers.' 98 We have sent clear signs to you, such as none can deny except those who transgress the truth. 99 Why is it that, whenever they make a covenant, some of them cast it aside? Most of them do not believe. 100 And when there came to them a messenger from Allah, confirming what was with them, a party of the people of the Book threw away the Book of Allah behind their backs, as if (it had been something) they did not know! 101 And they follow what devilish beings used to chant against the authority of Solomon, though Solomon never disbelieved and only the devils denied, who taught sorcery to men, which, they said, had been revealed to the angels of Babylon, Harut and Marut, who, however, never taught it without saying: "We have been sent to deceive you, so do not renounce (your faith)." They learnt what led to discord between husband and wife. Yet they could not harm any one or without the dispensation of God. And they learnt what harmed them and brought no gain. They knew indeed whoever bought this had no place in the world to come, and that surely they had sold themselves for something that was vile. If only they had sense! 102 And had they but believed and been conscious of Him, reward from God would indeed have brought them good - had they but known it! 103