Surah Ghafir, Verse 84

فَلَمَّا رَأَوۡاْ بَأۡسَنَا قَالُوٓاْ ءَامَنَّا بِٱللَّهِ وَحۡدَهُۥ وَكَفَرۡنَا بِمَا كُنَّا بِهِۦ مُشۡرِكِينَ٨٤

falammā ra-aw basanā qālū āmannā bil-lahi waḥdahu wakafarnā bimā kunnā bihi mush'rikīna

And when they saw Our punishment, they said, "We believe in Allāh alone and disbelieve in that which we used to associate with Him."