a night's lodging and a meal
A yojijukugo referring to the favor of receiving one night's stay and one meal, often implying a sense of obligation or indebtedness. Used in set phrases like 一宿一飯の恩義.
You must not forget the kindness of a night's lodging and a meal.
He worked for his benefactor to repay the obligation of a night's lodging and a meal.