Surah Yunus (Jonah), Verse 104

قُلْ یٰۤاَیُّهَا النَّاسُ اِنْ كُنْتُمْ فِیْ شَكٍّ مِّنْ دِیْنِیْ فَلَاۤ اَعْبُدُ الَّذِیْنَ تَعْبُدُوْنَ مِنْ دُوْنِ اللّٰهِ وَلٰكِنْ اَعْبُدُ اللّٰهَ الَّذِیْ یَتَوَفّٰىكُمْ وَاُمِرْتُ اَنْ اَكُوْنَ مِنَ الْمُؤْمِنِیْنَ ۟

Qul yaaa ayyuhan naasu in kuntum fee shakk-in min deenee fa laa a'budul lazeena ta'budoona min doonil laahi wa laakin a'budul laahal lazee yatawaffaakum wa umirtu an akoona minal mu'mineen

“Say: "O ye men! If ye are in doubt as to my religion, (behold!) I worship not what ye worship, other than Allah! But I worship Allah - Who will take your souls (at death): I am commanded to be (in the ranks) of the Believers,”

Quran 10:104 (Yusuf Ali Translation)