This book is a commentary of the invaluable advice of the Prophet ﷺ to ʿAbdullāh ibn ʿAbbās (Raḍiya ’llāhu ‘an-hu), which begins with the words, ‘Be mindful of Allah and He will be mindful of you.’ The famed eighth-century traditionist Ibn Rajab al-Ḥanbalī takes the reader on a thought-provoking journey through the meanings that can be derived from the hadith, in a manner that is scholarly and comprehensive, yet also easily understood. He explains that the hadith ‘contains great counsel and comprehensive principles from the most important and most significant aspects of the religion’, such as the rights we owe Allah ﷻ and what He has promised to give us if we fulfil those rights. Ibn Rajab supports his arguments with verses of the Qur’an, additional narrations of the Prophet ﷺ (whose transmissions are analysed), sayings of the Companions (Raḍiya ’llāhu ‘an-hum) and their followers, and insightful stories and poems. As a brief but expansive look at some of Islam’s fundamental tenets, it is an essential addition to every Muslim’s library.