An Islamic bookstore in Sydney's west is openly selling Sharia law books that call for the killing of gay people and ex-Muslims.

The Bukhari House Islamic Bookstore at Auburn sells a title, 'Shariah: The Islamic Law', that also advocates cutting off the hands of thieves and 100 lashes for adultery.

The shop, next door to a takeaway chicken outlet, rents space from the hardline Sunni group Ahlus Sunnah Wal Jamaah - whose preachers advise Muslims to stay away from non-believers and avoid events like New Year's Eve and the Easter Show.

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The Bukhari House Islamic Bookstore in Auburn sells titles covering sharia law next to kids' books

The Bukhari House Islamic Bookstore in Auburn rents space from a hardline Sunni group

The ASWJ has also hosted recent sermons saying it is sinful for men to use public urinals and for women to pluck their eyebrows.

The bookstore is downstairs from a second-storey mosque which was filling up with followers, including many children, on a weekday afternoon when school had just finished.

However the ASWJ, which runs the mosque, insists the bookstore is a separate entity after the shop's owner Abdullah Nafey was contacted for comment.

The book store was registered with the ASWJ from 2011 to November 2016, the Australian Securities and Investments Commission confirmed.

'The bookstore is a tenant of ASWJ Auburn and we do not have any influence or control on the day to day operations or what is sold,' the ASWJ's management committee told Daily Mail Australia.

'We would appreciate if you contact them directly regarding the books you purchased and that you do not infer that ASWJ Auburn is in anyway responsible for their operations.'

Daily Mail Australia found the Sharia law book on a table near the front entrance where a girl in a hijab was browsing through the titles, after the store was no longer in ASWJ hands.

Chapter 16, on Crimes and Punishments, explicitly calls for gay people to be killed, under an Islamic legal system which secular Muslims reject.

'If you find someone who is committing an act of the commitment of lut [that is homosexuality] kill the one on top and the one below,' it said.

The Bukhari House Islamic Bookstore at Auburn has a mosque upstairs with hardline preachers

The bookstore in Sydney sells sharia law books next to colourful children's books on Islam

The book also advocates the death penalty for anyone who leaves Islam 'in favour of any other religion either through an action or through words of mouth'.

'The punishment by death in the case of apostasy has been unanimously agreed upon by all the four schools of Islamic jurisprudence,' it said.

It cites the Hadith, or stories about the life of the Prophet Mohammad, to justify capital punishment for ex-Muslims.

The book also proscribes death for those who have sex with animals.

Women and children are regular visitors to the Bukhari House Islamic Bookstore in Auburn

'There are times when a human being falls to the level of beasts and commits sexual intercourse with animals,' it said.

'Punishment of stoning to death should be applied on the individual and the animal which was the subject of bestiality should also be killed; and its flesh is unlawful.'

Another page outlines how thieves should have their hands chopped off, as part of a set of punishments known as hudud.

'Cutting the hands is applied after the following conditions are fulfilled: the person must be sane, he must be an adult, he must not have been compelled to commit theft, he must not be hungry while committing theft,' it said.

The same chapter also proscribed 100 lashes for adultery, which is practised in the Aceh province of Indonesia.

'The woman and the man guilty of adultery or fornication, flog each of one of them with a hundred stripes,' it said.

'Let not compassion move you in their case. The idea behind awarding the seemingly harsh punishment is that it should serve as a deterrent to society.'

Daily Mail Australia bought several other titles including, 'Punishment of Apostasy in Islam' featuring a noose on the front cover, 'The Book of Major Sins' with an image of hell fire and 'Description of Paradise in the Glorious Quran'.

This book says the women in the paradise afterlife would be free from 'all kinds of situations that women are prone to in this world such as menstruation, post-natal bleeding, urination, defecation, spitting, nasal mucus and sexual discharge among other things that are naturally irritating'.

Sydney psychiatrist and author Tanveer Ahmed said Islamic bookstores were no help if teenagers were already radicalised

Bangladeshi-born Sydney psychiatrist Tanveer Ahmed, who grew up in a Muslim family, said while the internet was more likely to radicalise disaffected teenagers, books like this could help harden their views against the West.

'That's when books like this may play a role. It's a symbol of the types of ideas that are available to any young Muslim that becomes more religious and more resentful at the host society,' Dr Ahmed told Daily Mail Australia.

'They become more and more intensely religious. It begins as a way of asserting identity and belonging but it can harden into something worse, often lashing out at people around them for not being religious enough.'