The vast majority of Muslims in Australia belong to the two major denominations of Islam, the Sunni and Shia denominations, with the followers of each of these further split along different Madh'hab (schools of thought within Islamic jurisprudence for the interpretation and practice of Islamic law). There are also practitioners of other smaller denominations of Islam, including Ahmadiyya Muslim Australians of various national backgrounds, Ibadi Muslim Australians of Omani descent, as well as some non-denominational Muslims, and approximately 20,000 Druze Australians whose religion emerged as an offshoot of Islam which arrived in Australia with the immigration of Druze mainly from Lebanon and Syria. There are also Sufi (Islamic mysticism) minorities among Muslim practitioners in Australia.