This is a beautiful compilation of explanations of the famous Hadith of the "Man who Killed 99 Men" explained by Al-Imaam An-Nawawi, Muhammad bin Salih Al-Uthaymeen, and Salim Al-Hilalee. This small book is 38 pages, and includes important fataawaa from Abdul Aziz bin Abdullah bin Baz about At-Tawbah.