In Syria, he studied various Islamic subjects and modules, from Fiqh, Usool Al-Fiqh, Hadith, Mustalah al-hadith, Quranic Science and Tafseer and Arabic studies. He generally focused on and specialised in Arabic and Comparative Fiqh (Islamic Law/Jurisprudence) and received numerous Ijaza’s in that field.
Alsuleiman arrived back to Sydney in early 2001, where he began to be heavily active and involved with the Muslim youth and the second Muslim generation in Australia. He is the founder of one of Australia’s largest youth centres known as the UMA in Sydney, and also the founder of Sydney Islamic College that delivers Islamic studies to adults. He also held the position of the secretary of the Australian National Imams Council (ANIC) from 2006 to 2015.