غافر — Ghafir Ayat 84
فَلَمَّا رَاَوْا بَأْسَنَاۗ قَالُوْٓا اٰمَنَّا بِاللّٰهِ وَحْدَهٗ وَكَفَرْنَا بِمَا كُنَّا بِهٖ مُشْرِكِيْنَ
Falammā ra'au ba'sanā qālū āmannā billāhi waḥdahū wa kafarnā bimā kunnā bihī musyrikīn(a).
"And when they saw Our punishment, they said," We believe in Allah alone and disbelieve in that which we used to associate with Him.""