細さい事じ

noun

trifle; minor detail

Refers to something small, trivial, or of little importance. Often used in contrast to more significant matters.

• そんな細さい事じにこだわるな。

  Don't get hung up on such a trifle.

• 細さい事じは後あと回まわしにして、大だい事じなことから片かた付づけよう。

  Let's put the minor details aside and take care of the important things first.