hei [a koe] (rawa) te kōrero
1. you can talk, she can talk, he can talk, who's she to talk like that - an idiom to suggest that someone is in no position to criticise because they are just as bad.
Rangi: Kei te kaha rawa te warea o Kaho ki tāna mahi. Pare: Hei a koe te kōrero! Kāore anō koe kia hararei noa mō ēnei tau e toru nei (HKK 1999:79). / Rangi: Kaho is too busy with his work. Pare: You can talk! You haven't had a holiday for the last three years.
Pare: E kī ana taku rangatira he nui rawa aku haere ki te hararei. Rangi: Hei tō rangatira rawa te kōrero pērā! (HKK 1999:79). / Pare: My boss says I go on holiday too much. Rangi: He can talk!