Luke 15:30
But when this son of yours who has squandered your property with prostitutes comes home, you kill the fattened calf for him — this son of yours: the deliberate refusal to say my brother — the disowning of the relationship. Who has squandered your property with prostitutes: the older son's addition of prostitutes (not mentioned in the original narrative) may be assumption or rumor. The moral calculation is explicit: he wasted the inheritance on the worst possible things, and he gets the best possible welcome.