V. 1. Kitab-ut-taharat was salat was saum )the book of purification, prayers and fasting( - V. 2. Kitab-uz-zakat wa hajj )the book of poor-rate and pilgrimage( - V. 3. Kitab-un-nikah wa talaq )the book of marriage and divorce( - V. 4. Kitab-ut tijarat )the book of business & commercial dealings( - V. 5. Kitab-ul-miras )the Islamic law of inheritance(