kua riro māna
1. it's up to him, it's up to her, the ball's in her court, the responsibility is hers - an idiom.
Kua riro māna anō āna hipi e katikati, kua kore i haria ki te teihana i Ōpoho (TTT 1/2/1928:733). / It is up to him to shear his sheep, no longer can they be taken to the station at Ōpoho.