A fundamentalist Muslim preacher from western Sydney says Australia's acceptance of homosexuality is encouraging sex with animals, paedophilia and incest.

Hardline Sunni teacher Nassim Abdi delivered his rant about gay people, on the same day the Australian Bureau of Statistics revealed a 61.6 per cent national Yes vote for redefining marriage.

The Sharia law advocate also described homosexuality as a worse kind of sin than extramarital adultery because it was 'unnatural'.

Sunni fundamentalist Nassim Abdi linked the acceptance of homosexuality with bestiality, incest and paedophilia

'If you get to a level where you accept homosexuality, what is there not to accept?,' he said on Wednesday.

The Islamic morals campaigner from the Ahlus Sunnah Wal Jamaah Association equated homosexuality with humans having sexual relations with animals.

'Why it is wrong if a man can come to a man than a man can't go to an animal?,' he asked.

'You see the spread of this in societies when bestiality and a human being committing fornication with animals is on the rise and in some countries legal.'

The preacher, who adheres to an extreme Salafist version of Islam derived from Saudi Arabia, also linked society's acceptance of homosexuality with paedophilia.

'The homosexual says this is my natural inclination because I was born like this,' he said.

The Salafist preacher said men who shaved their beards were sinful and would turn gay

'The paedophile says I was born like this. I like young children.

'Their values have gone. Why? Because they accept homosexuality.

'You see the increase in paedophilia where men or even women will go to young children because there's no barrier any more.

'Why can't I be attracted to the young boy or the young girl?'

The Ahlus Sunnah Wal Jamaah Association hosts this preacher who links gays with incest

Mr Abdi's fundamentalist Sunni organisation has a mosque at Auburn.

This suburb falls within the federal safe Labor electorate of Blaxland, which delivered a 74 per cent No vote to gay marriage, the highest in Australia.

Auburn, a suburb where 43 per cent of its residents are Muslim, is now considered to be one of the most socially conservative districts in Australia.

As part of his 52-minute rant, he linked society's acceptance of homosexuality with incest.

'What is there to stop a person … committing incest?,' he asked.

'Mother and son, brother and sister and unfortunately this is also on the rise.

'Before it was always hidden.

'Never acceptable for a person to say, "I sleep with my sister" or "I sleep with my mother".

The fundamentalist, who has previously chastised women for showing their ears in public or plucking their eyebrows, said homosexuality was a worse sin than heterosexual adultery.

'Homosexuality is worse. As for a man and a man or a woman and a woman this is an unnatural act,' he said. 'And things which are not natural have far worse of a sin.

'No one committed the filth like them.'

Mr Abdi said he remembered a time before homosexuality was accepted in Australia.

'He wasn't even allowed to have feminine tendencies,' he said.

'Even when I was a little bit younger, that a person, a non-Muslim, was to wear an earring in the right ear, then this was a sign that he was a homosexual and this person would be beaten.'