This book is a brief yet extremely beneficial explanation of Muhammad ibn Abdal Wahab's famous Kitab al Tawhid. The book, as the title suggets, deals with the subject of worshipping Allah alone without associating partners with Him. The author highlights many matters that have become common among Muslims even though they are clearly acts of shirk or associating partners with Allah. Not only is this book distinguished due to the importance of the subject matter but also due to the methodology adopted by the author for which he is well known. The reader will find that th emajority of the book consists of verses of the Qur'an, ahadith of the Prophet (pbuh), and sayings of the early Muslims. The explanation presented at the end of each chapter of Kitab al-Tawhid is that of the renowned scholars Allamah Abd al-Rahman al-Sa'di, counted among the major scholars of recent times. He was born in al-Qasim, Saudi Arabia, in the year 1307 AH, and from a young age became engrossed in the attainment of knowledge. His dedication and thirst for knowledge led him to becom an authority in many of the Islamic sciences as is evident from the books that he authored. He passed away in the year 1376 AH, may Allah have mercy on him.