Shaykh Salaah Al-Budair has chosen the ahadeeth in this book with due care and diligence. In order to compile thses ahadeeth, he has very meticulously studied almost the entire stock of hadith literature available. Like an expert gems dealer, Shaykh Salaah has chosen only those hadith for the purpose of explaining a particular topic, which were the most relevant in terms of their meanings and context. For this purpose, on some occasions a single hadith has been taken from many different books of Hadith.