Wineera said Ngati Toa would not try to restrict other New Zealand sporting teams from performing the haka, provided they also treated it with due respect.
Details of the agreement remain confidential, although the NZRU has in the past expressed reluctance to pay for the right to perform the ritual, saying reducing it to a commercial commodity would demean it.
The haka is traditionally only performed by men and the Spice Girls attracted criticism in 1997 when they did an impromptu version during a concert in Bali.
A New Zealand bakery chain also came under fire for a 2007 commercial featuring animated gingerbread men with squeaky voices doing the haka.
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