So they went on until, when they met a boy, he slew him. (Musa) said: Have you slain an innocent person otherwise than for manslaughter? Certainly you have done an evil thing.

He said: As to him who is injust, we will chastise him, then shall he be returned to his Lord, and He will chastise him with an exemplary chastisement:

And how many a town which rebelled against the commandment of its Lord and His messengers, so We called it to account severely and We chastised it (with) a stern chastisement.