Ghafir 40:84

Falamma raaw ba/sana qalooamanna billahi wahdahuwakafarna bima kunna bihi mushrikeen

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

When they saw Our punishment, they said, “We have (now) come to believe in Allah alone, and We have rejected everything we used to ascribe (to Him) as partners.”