The Forty Hadith of Imam Nawawi” is a celebrated collection of forty-two hadiths compiled by the great 7th-century Shafi’i scholar, Imam Yahya ibn Sharaf al-Nawawi. Carefully selected for their comprehensiveness and foundational relevance, these hadiths cover essential themes in Islam such as intention, sincerity, legal rulings, ethics, worship, and interpersonal conduct. Each hadith serves as a pivotal principle of the religion, with many scholars praising the collection as a summary of the core teachings of Islam. Ibn Rajab al-Hanbali, a notable 8th-century scholar, expanded upon Imam Nawawi’s work by adding 8 more hadiths, bringing the total to 50. His additions continue the thematic trajectory of the original collection—highlighting sincerity, reliance on Allah, the rights of others, and the path to Paradise. In his commentary, Jāmi‘ al-‘Ulūm wal-Ḥikam, Ibn Rajab not only explains the meanings of these hadiths with great depth and clarity but also integrates the wisdom of earlier scholars, Qur’anic parallels, and practical applications. His expansion is widely appreciated for enriching the spiritual and intellectual impact of Nawawi’s original compilation.