Forty Hadith (Persian: شرح چهل حدیث) is a 1940 book written by Ruhollah Khomeini, the founder of the Islamic Republic of Iran.

[3][4] The best-known example of this genre is Imam Nawawi's Forty Hadith, which was written to include all the fundamentals of the sacred Islamic law.

[5][6] Thirty-three of the hadith Khomeini selected pertain to Islamic ethics, including acts which bring reward or punishment.

[6] Among the themes identified by Khomeini are Ostentation, Pride, Envy, Anger, Hypocrisy, Desire and Hope, the Kinds of Hearts, Walayah (guardianship) and Love of the world.

[8] Four years later, the book was translated into Kurdish by Ali Husseini and published by the Islamic Republic of Iran’s cultural attaché in Turkey.