This book was written by Al-Haafidh Muhiy Ad-Deen Yahya bin Sharaf Abee Zakiriyya An-Nawawee explained by Ash-Shaykh Al-Allaamah Muahmmad bin Saalih Al-Uthaymeen (Rahimahullaah) 431 pages printed on yellow paper by the Shaykh's Foundation in KSA.