39:2
إِنَّآ أَنزَلْنَآ إِلَيْكَ ٱلْكِتَـٰبَ بِٱلْحَقِّ فَٱعْبُدِ ٱللَّهَ مُخْلِصًا لَّهُ ٱلدِّينَ
innā anzalnā ilayka l-kitāba bil-ḥaqi fa-uʿ'budi l-laha mukh'liṣan lahu l-dīna
It is We who sent down the Scripture to you [Prophet] with the Truth, so worship God with your total devotion:
Verily We have sent down the Book to you (O Muhammad صلى الله عليه وسلم) in truth: So worship Allâh (Alone) by doing religious deeds sincerely for Allâh’s sake only.