هود — Hud Ayat 26

اَنْ لَّا تَعْبُدُوْٓا اِلَّا اللّٰهَ ۖاِنِّيْٓ اَخَافُ عَلَيْكُمْ عَذَابَ يَوْمٍ اَلِيْمٍ

Allā ta‘budū illallāh(a), innī akhāfu ‘alaikum ‘ażāba yaumin alīm(in).

"That you not worship except Allah. Indeed, I fear for you the punishment of a painful day.""