Surah Az-Zumar, ayah 54

وَأَنِيبُوٓاْ إِلَىٰ رَبِّكُمۡ وَأَسۡلِمُواْ لَهُۥ مِن قَبۡلِ أَن يَأۡتِيَكُمُ ٱلۡعَذَابُ ثُمَّ لَا تُنصَرُونَ ٥٤

Wa anībū ilā rabbikum wa aslimū lahū min qabli an ya'tiyakumul-'adhābu thumma lā tunsarūn

And return [in repentance] to your Lord and submit to Him before the punishment comes upon you; then you will not be helped.