Qur'an 39:11 · Az-Zumar

قُلْ إِنِّىٓ أُمِرْتُ أَنْ أَعْبُدَ ٱللَّهَ مُخْلِصًۭا لَّهُ ٱلدِّينَ

(11) Say, [O Muḥammad], "Indeed, I have been commanded to worship Allāh, [being] sincere to Him in religion.