出でる幕まくではない

expression

it's none of one's business; it's not one's place to say or do something

Used to indicate that the speaker has no right or reason to interfere, speak, or act in a given situation. Often used humbly or to dismiss someone's involvement.

• 彼かれの家か庭ていの問もん題だいだから、私わたしが出でる幕まくではない。

  It's his family matter, so it's not my place to interfere.

• 専せん門もん家かの前まえで素人しろうとが意い見けんを言いうなんて、出でる幕まくではないよ。

  It's not my place as an amateur to give an opinion in front of experts.