小しょう事じは大だい事じ

expression

a small leak can sink a great ship; small matters lead to great consequences

Proverb warning that seemingly trivial things can cause major problems if ignored.

• 小しょう事じは大だい事じというから、小ちいさなミスも見み逃のがしてはいけない。

  As the saying goes, a small leak can sink a great ship, so you must not overlook even small mistakes.