﴿ ٱسْتَجِيبُوا۟ لِرَبِّكُم مِّن قَبْلِ أَن يَأْتِىَ يَوْمٌۭ لَّا مَرَدَّ لَهُۥ مِنَ ٱللَّهِ ۚ مَا لَكُم مِّن مَّلْجَإٍۢ يَوْمَئِذٍۢ وَمَا لَكُم مِّن نَّكِيرٍۢ ﴾

“[Hence, O men,] respond to your Sustainer before there comes, at God’s behest, a Day on which there will be no turning back: [for] on that Day you will have no place of refuge, and neither will you be able to deny aught [of the wrong that you have done].”

(Answer the call of your Lord) by believing in Allah's divine Oneness (before there cometh unto you from Allah a Day) the Day of Judgement (which there is no averting. Ye have no refuge) no escape (on that Day) from Allah's torment, (nor have ye any (power of) refusal) nor do you have any helper.