Sura al-Māʾidah 5:49

وَأَنِ ٱحْكُم بَيْنَهُم بِمَآ أَنزَلَ ٱللَّـهُ وَلَا تَتَّبِعْ أَهْوَآءَهُمْ وَٱحْذَرْهُمْ أَن يَفْتِنُوكَ عَنۢ بَعْضِ مَآ أَنزَلَ ٱللَّـهُ إِلَيْكَ فَإِن تَوَلَّوْا۟ فَٱعْلَمْ أَنَّمَا يُرِيدُ ٱللَّـهُ أَن يُصِيبَهُم بِبَعْضِ ذُنُوبِهِمْ وَإِنَّ كَثِيرًا مِّنَ ٱلنَّاسِ لَفَٰسِقُونَ

wa-ani aḥkum baynahum bimā anzala allāhu wa-lā tattabiʿ ahwāʾahum wa-aḥdharhum an yaftinūka ʿan baʿḍi mā anzala allāhu ilayka fa-in tawallaw fa-iʿlam annamā yurīdu allāhu an yuṣībahum bi-baʿḍi dhunūbihim wa-inna kathīran mina l-nāsi lafāsiqūna

And this (He commands): Judge thou between them by what Allah hath revealed, and follow not their vain desires, but beware of them lest they beguile thee from any of that (teaching) which Allah hath sent down to thee. And if they turn away, be assured that for some of their crime it is Allah's purpose to punish them. And truly most men are rebellious.

Sura al-Māʾidah 5:92

وَأَطِيعُوا۟ ٱللَّـهَ وَأَطِيعُوا۟ ٱلرَّسُولَ وَٱحْذَرُوا۟ فَإِن تَوَلَّيْتُمْ فَٱعْلَمُوٓا۟ أَنَّمَا عَلَىٰ رَسُولِنَا ٱلْبَلَٰغُ ٱلْمُبِينُ

wa-aṭīʿū allāha wa-aṭīʿū l-rasūla wa-aḥdharū fa-in tawallaytum fa-iʿlamū annamā ʿalā rasūlinā l-balāghu l-mubīnu

Obey Allah, and obey the Messenger, and beware (of evil): if ye do turn back, know ye that it is Our Messenger's duty to proclaim (the message) in the clearest manner.