سورة Al-An'am ( The Cattle ) - الآية 157

or [lest] you should say, ‘If the Book had been sent down to us, surely we would have been better-guided than them.’ There has already come to you a manifest proof from your Lord and a guidance and mercy. So who is a greater wrongdoer than him who denies the signs of Allah, and turns away from them? Soon We shall requite those who turn away from Our signs with a terrible punishment because of what they used to evade.