Hailani Muji Tahir, PhD, is the former professor of Mu’amalat, economy, and Islamic financial in the Department of Sharia, Islamic Studies Faculty, Universiti Kebangsaan Malaysia (UKM). Dato’ Hailani has contributed a lot to the country through his researches, analyses, and writings on topics such as zakat, waqf, and bayt al-mal as well as his involvement in the country’s national budget and development.