mind one's own business

From LSJ

ἀλλὰ τί ἦ μοι ταῦτα περὶ δρῦν ἢ περὶ πέτρην → why all this about trees and rocks, why all these things we have nothing to do with

Source

English > Greek (Woodhouse Extra)

τὰ αὑτοῦ πράσσειν