If someone's father and mother are not paying khums is it permissible for their son to pray in their house or eat food or buy clothes from their money
If someone's father and mother are not paying khums is it permissible for their son to pray in their house or eat food or buy clothes from their money if their son is totally dependent on them on food, house and money

In the name of God

Yes it is permitted.

Website code number en131