Fable 158 - The Thieves and the Cock

Some thieves who broke into a house found nothing there but a cockerel. They took it and went away. As he was about to be
sacrificed by them the cock begged them to release him, pleading that he was useful to men in rousing them by night for their work.
‘All the more reason to kill you,’ they said, ‘for by waking men up you prevents us from thieving.’

This fable shows that the more you thwart the bad, you render service to the good.