The author writes, "In dealing with the subject [jurisprudence of the Sunnah], I have recorded what is basic, to the point, and what a Muslim is supposed to know..." Topics covered include purification, prayer, zakah, fasting, funerals, dhikr (remembrance of Allah), supplications, hajj and umrah.

About Fiqh-us-Sunnah, the respected scholar as-Sayyid Sabiq writes: In dealing with the subject [of fiqh, or jurisprudence of the Sunnah], I have recorded what is basic, to the point, and what a Muslim is supposed to know...I say with confidence that I have presented the authentic fiqh with which Allah has sent the Prophet (blessings and peace of Allah be upon him). At the same time, I have tried to make it easier for people to understand and to bring them together [following] the Book and the Sunnah. I have avoided the differences and the wrong practice of blindly sticking to one school of thought. These first four volumes cover the topics of purification, prayer, zakâh, fasting, funerals, dhikhr (remembrance of Allah), supplications, hajj and umrah.