Kashf al-Asrar (Persian: کشف الأسرار Kashf al-Âsrâr "Unveiling of Secrets") is a book written in 1943 by Ruhollah Khomeini, the founder of the Islamic Republic of Iran, to respond to the questions and criticisms raised in a 1943 pamphlet titled The Thousand-Year Secrets (Persian: Asrar-i Hazarsala)[1] by Ali Akbar Hakimzadeh, who had abandoned clerical studies at Qom seminary and in the mid-1930s published a modernist journal titled Humayun that advocated reformation in Islam.

Ruhollah Khomeini wrote Kashf al-Asrar to answer questions about the credibility of Islamic and Shia beliefs that originated in a pamphlet called The Thousand-Year Secrets, which was written by Ali Akbar Hakamizada.

[2][3][5] According to Khomeini's son Ahmad, one day when his father was going to Feyziyeh School, he encountered a group of seminary students discussing this pamphlet.

[8] Kashf al-Asrar consists of six chapters, the ordering of which mirrors the division of content in The Thousand-Year Secrets:[9][10] "Tawhid", "Imamah", "The Clergy", "Government", "Law", and "Hadith".

One of the responses was written by Mehdi Al-Khalissi; Kashf al-Asrar was another answer to the pamphlet; Ruhollah Khomeini taught philosophy at that time.