Chī rén yīkǒu, bào rén yī dǒu.

吃人一口, 報人一斗。

Lit Eat one mouthful of [someone's] rice, [and one day you will have to] return one bushel to them.

Fig If one takes petty advantages of others, one will suffer great losses some day.

Note [Rhyme; note a dǒu is a unit of measure for grain equal to ten liters.]

Topics dǒu JUSTICE LOSS PETTINESS RETRIBUTION rhyme