What goes around comes around
tʃaɪniːzle̞tə tʃaɪniːzle̞tə tʃaɪniːzle̞tə tʃaɪniːzle̞tə aɪ ɛn dʒiː eɪ əʊmakɹɒn eɪtʃ əʊmakɹɒn
In Japanese 因果応報 (Inga ōhō).
This idiom reflects the Buddhist concept of karma and the consequences of actions.
Example
"彼は嘘をついたので、誰も彼を信じません。因果応報だ。"