High-profile Muslim leader Jamal Rifi says he will happily buy a one-way ticket for any Islamic radicals wanting to leave Australia.

Dr Rifi says Sydney's Muslim community is deeply offended by comments by Wissam Haddad, the manager of Al-Risalah Islamic Centre in Bankstown, who said he and his followers would give up their Australian passports if they could leave without being incriminated.

"I'll buy them a one-way ticket out of Australia never to come back," the Sydney-based Dr Rifi said, according to News Corp Australia.

"Let them give away their citizenship. These people are saying they want to go and relieve the oppressed Muslims overseas.

"Why would they care so much about the oppression of the Muslims overseas and through their actions and statements cause so much oppression and trouble to the Muslims in Australia?"

Dr Rifi said he supported Prime Minister Tony Abbott's concept of being on Team Australia and believed the greater majority of the Muslim community also agreed with it.

"If given the option to fight for the Australian flag or the ISIS (Islamic State) flag I, without any hesitation, will choose the Australian flag because I totally believe ISIS and its ideology are the enemy of Islam," Dr Rifi said.