Hūd - 26

﴿أَنْ لَا تَعْبُدُوا إِلَّا اللَّهَ ۖ إِنِّي أَخَافُ عَلَيْكُمْ عَذَابَ يَوْمٍ أَلِيمٍ﴾

---

(26) That you not worship except Allāh. Indeed, I fear for you the punishment of a painful day."