This document discusses different types of wajib (obligatory) acts in Islam. It explains that it is wajib for both men and women to recite surahs (chapters of the Quran) silently in daily prayers. For men, it is wajib to recite surahs loudly in the Fajr, Maghrib and Isha prayers. It is also wajib for both genders to recite the Tasbihate Arba silently in the Dhuhr and Asr prayers. The document notes that some acts become wajib as a result of performing another wajib act, such as paying khums before going for Hajj. It lists individual obligations like