(inā) koinā noa (iho)
1. if that's all - an idiom to play down the importance or value of something.
Inā koinā noa iho tāna ka pahure, he aha i tonoa atu ai? / If that’s all he’s good for, why bother asking him?
Kāore au e mōhio mēnā he tohutohu ēnā ki ahau nā taku tamarikitanga, mēnā he tohutohu whānui tonu tēnā, mēnā koinā noa iho rānei tā tērā pakeke ōku tohutohu (Rewi 2005:235). / I don't know if those were instructions to me when I was young, if it was general advice, or if that was all that that elder advised.
Mēnā koinā noa iho, ā kāti tukuna kia kōrero. / If that's all, then let him speak.