AZ ZUMAR — Ayat 2

إِنَّا أَنزَلْنَا إِلَيْكَ الْكِتَابَ بِالْحَقِّ فَاعْبُدِ اللَّهَ مُخْلِصًا لَّهُ الدِّينَ

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