وَإِذَا تُتْلَىٰ عَلَيْهِمْ ءَايَاتُنَا بَيِّنَـٰتٍ ۙ قَالَ ٱلَّذِينَ لَا يَرْجُونَ لِقَآءَنَا ٱئْتِ بِقُرْءَانٍ غَيْرِ هَـٰذَآ أَوْ بَدِّلْهُ ۚ قُلْ مَا يَكُونُ لِىٓ أَنْ أُبَدِّلَهُۥ مِن تِلْقَآئِ نَفْسِىٓ ۖ إِنْ أَتَّبِعُ إِلَّا مَا يُوحَىٰٓ إِلَىَّ ۖ إِنِّىٓ أَخَافُ إِنْ عَصَيْتُ رَبِّى عَذَابَ يَوْمٍ عَظِيمٍ

Wa-itha tutla AAalayhim ayatunabayyinatin qala allatheena layarjoona liqaana i/ti biqur-anin ghayri hathaaw baddilhu qul ma yakoonu lee an obaddilahu min tilqa-inafsee in attabiAAu illa ma yooha ilayyainnee akhafu in AAasaytu rabbee AAathabayawmin AAatheem

And when Our verses are recited to them as clear evidences, those who do not expect the meeting with Us say, "Bring us a Qur’ān other than this or change it." Say, [O Muḥammad], "It is not for me to change it on my own accord. I only follow what is revealed to me. Indeed I fear, if I should disobey my Lord, the punishment of a tremendous Day."