Surah Al-An'am (The Cattle), Verse 157

اَوْ تَقُوْلُوْا لَوْ اَنَّاۤ اُنْزِلَ عَلَیْنَا الْكِتٰبُ لَكُنَّاۤ اَهْدٰی مِنْهُمْ فَقَدْ جَآءَكُمْ بَیِّنَةٌ مِّنْ رَّبِّكُمْ وَهُدًی وَّرَحْمَةٌ فَمَنْ اَظْلَمُ مِمَّنْ كَذَّبَ بِاٰیٰتِ اللّٰهِ وَصَدَفَ عَنْهَا سَنَجْزِی الَّذِیْنَ یَصْدِفُوْنَ عَنْ اٰیٰتِنَا سُوْٓءَ الْعَذَابِ بِمَا كَانُوْا یَصْدِفُوْنَ ۟

Aw taqooloo law annaaa unzila 'alainal kitaabu lakunnaaa ahdaa minhum; faqad jaaa'akum baiyinatum mir Rabbikum wa hudanw wa rahmah; faman azlamu mimman kazzaba bi Aayaatil laahi wa sadafa 'anhaa; sanajzil lazeena yasdifoona 'an Aayaatinaa sooo'al 'azaabi bimaa kaanoo yasdifoon

“Or lest ye should say: "If the Book had only been sent down to us, we should have followed its guidance better than they." Now then hath come unto you a clear (sign) from your Lord,- and a guide and a mercy: then who could do more wrong than one who rejecteth Allah's signs, and turneth away therefrom? In good time shall We requite those who turn away from Our signs, with a dreadful penalty, for their turning away.”

Quran 6:157 (Yusuf Ali Translation)