Surah Az-Zumar (The Successive Groups), Verse 14

قُلِ اللّٰهَ اَعْبُدُ مُخْلِصًا لَّهٗ دِیْنِیْ ۟

Qulil laaha a'budu mukhlisal lahoo deenee

“Say: "It is Allah I serve, with my sincere (and exclusive) devotion:”

Quran 39:14 (Yusuf Ali Translation)