Quran 39:2

إِنَّآ أَنزَلْنَآ إِلَيْكَ ٱلْكِتَٰبَ بِٱلْحَقِّ فَٱعْبُدِ ٱللَّهَ مُخْلِصًۭا لَّهُ ٱلدِّينَ

Indeed, We have sent down to you the Book, [O Muhammad], in truth. So worship Allah, [being] sincere to Him in religion.

Translation · Saheeh International