Ustadz H. Zainal Arifin is a senior scholar specializing in Islamic criminal law (Fiqih Jinayah) and financial transactions (Fiqih Muamalah). He is particularly knowledgeable about the application of Hudud, Qishas, Diyat, and Tazir laws in contemporary society. With years of experience in teaching and legal consultation, Ustadz Zainal is a highly respected figure in the field of Islamic law.