Tafsil al-Shari'a Fi Sharh Tahrir al-Wasilah (Kitab Al-Taharah) THE DIFFERENT KINDS OF WATER The second volume of the book, which consists of 276 pages, focuses on purifying agents. The author elaborates at length on the various types of water. He gives definitions and rules of mozaf (mixed) and pure (unmixed) waters and the different types of pure water as well as the doubts in connection with them.