he aha te aha
1. what is what, what's what, nothing changes, nothing changed, to no avail, it was a waste of time - an idiom also used at the end of a sentence to indicate that what is stated preceding the idiom was a waste of time or of no benefit.
Kua hia marama ia e ako ana ki te kauhoe, he aha te aha! / Although she has been learning to swim for many months, she still can't!
Ahakoa pēhea taku whakaatu atu me pēnei kē te tui noke, he aha te aha! (HKK 1999:69). / No matter how I showed her that threading worms should be done this way, it was a waste of time!