Meaning of 水心あれば魚心 in Japanese

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水心 あれ 魚心

  1. Words

Definition of 水心あれば魚心

  1. (exp) if you do a favor for somebody, you will get a return favor; if the water is kind to fish, the fish will be friendly toward water too; mutual back-scratching →Related words: 魚心あれば水心
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