A proverb meaning 'kindness begets kindness' or 'if a fish shows goodwill to the water, the water will be kind to the fish' — mutual goodwill leads to mutual help.
彼にまず手伝いを申し出たら、魚心あれば水心ありで次は向こうが助けてくれた。
When I offered to help him first, he returned the favor — kindness begets kindness.
商売では魚心あれば水心あり。こちらが誠実なら客も信頼してくれる。
In business, 'kindness begets kindness' applies: if we're sincere, customers will trust us.
魚心あれば水心あり、まずは挨拶から関係を良くしよう。
Kindness begets kindness — let's start by greeting each other to build a good relationship.