Sura al-Qaṣaṣ 28:85

إِنَّ ٱلَّذِى فَرَضَ عَلَيْكَ ٱلْقُرْءَانَ لَرَآدُّكَ إِلَىٰ مَعَادٍ قُل رَّبِّىٓ أَعْلَمُ مَن جَآءَ بِٱلْهُدَىٰ وَمَنْ هُوَ فِى ضَلَٰلٍ مُّبِينٍ

inna alladhī faraḍa ʿalayka l-qurʾāna la-rādduka ilā maʿādin qul rrabbī aʿlamu man jāa bil-hudā wa-man huwa fī ḍalālin mubīnin

Verily He Who ordained the Qur'an for thee, will bring thee back to the Place of Return. Say: "My Lord knows best who it is that brings true guidance, and who is in manifest error."