Hud • BN-TAFSEER-IBN-E-KASEER
﴿ أَن لَّا تَعْبُدُوٓا۟ إِلَّا ٱللَّهَ ۖ إِنِّىٓ أَخَافُ عَلَيْكُمْ عَذَابَ يَوْمٍ أَلِيمٍۢ ﴾
“that you may worship none but God-for, verily, I fear lest suffering befall you on a grievous Day!"”
Please check ayah 11:27 for complete tafsir.