Nāhau = nāu, pron. By thee, belonging to thee, etc. He herenga kaipuke nahau, e Te Marutuna (M. 220). ‖ na (iv).
Williams Dictionary
Nahau, a. Quick. ‖ ngahau.
Nāhau tēnei?Does this belong to you?Established possession - nāku, nōku...