A Brâhmana that dwells in the house of a foolish man without receiving food to eat, destroys his hopes and expectations, his possessions, his righteousness, his sacred and his good deeds, and all his sons and cattle."

In plain words: Yama's servants warn him that a priestly guest left without food in a careless host's house brings ruin. The host loses his hopes, his wealth, his good deeds, his children and his cattle.