أَن لَّا تَعۡبُدُوٓاْ إِلَّا ٱللَّهَۖ إِنِّيٓ أَخَافُ عَلَيۡكُمۡ عَذَابَ يَوۡمٍ أَلِيمٖ ٢٦
Al lā taʿbudū illallāh, innī akhāfu ʿalaykum ʿadhāba yawmin alīm.
That you not worship except Allāh. Indeed, I fear for you the punishment of a painful day."
Translation: Sahih International