Purification often inaugurated the volumes of fiqh and worship because it was a prerequisite for prayer, the most important physical part of Islam.

We learn from Kitab al-Tahaarah how to perform ablution and bathing; the water that is good for it; the acts that nullify or necessitate these actions; concessions and substitutes; guidelines for feminine bleeding; and what other materials may be “impure” and how we interact with them and cleanse our bodies after excreting some of them.