kāore he aha (tahi) ki a [au]
1. I don't care, it doesn't matter to me, no worries, not to worry - an idiom indicating a lack of concern or relevance.
Kei te wiriwiri ō papa mō tō whakamātautau ā-waha āpōpō? Kāore he aha ki a au, i te mea kua whiwhi kē au i ngā māka papai mō aku tuhituhinga. / Are you shaking in your boots about your oral exam tomorrow? I'm not worried. I got good marks for my essays.
Pāora: Engari i kōrero whērā mai taku kaiako. Tīmoti: Kāore he aha tahi, Pāora. He hē tonu te hē. / Pāora: But that's what my teacher said. Tīmoti: I don't care, Pāora. If it's wrong it's wrong.