si6 bat1 gwaan1 gei2事不關己事不关己

Jyutpingsi6 bat1 gwaan1 gei2
Yalesih bāt gwāan géi

Definition

A matter of no concern to oneself; none of one's business.

Grammar color guide

Noun
Verb
Adjective
Adverb
Pronoun
Classifier
Particle
Connector