﴿ 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!"”

(That ye serve none) you confess the divine Oneness of none, (save Allah. Lo! I fear for you) I know that there shall come upon you if you do not believe (the retribution of a painful Day) which is drowning.