hei aha (atu) [māu]
1. don't worry about it, don't let it bother you, you don't need, why should you care, mind your own business - an idiom indicating a lack of concern or relevance.
Kua pōuri au i ngā kōrero a Ani. Hei aha māu ngā kōrero a tēnā wahine weriweri. / I'm upset about what Ann said. Don't worry about what that horrible woman says.
Hei aha atu māu tā rātou e kī nei. / Don’t pay any attention to what they’re saying.
Hei aha atu mā rātou. / They shouldn't be worried about it.
See also hei aha (noa iho), hei aha atu, hei aha (atu) mā wai?