The book "Key of the House of Happiness" and "Publication of the Authority of Knowledge and Will"

The book is the key to the house of happiness and the publication of the authority of knowledge and will. The author is Imam Shams al-Din Muhammad ibn Abi Bakr ibn Qayyim al-Jawziyya. The publisher is Dar al-Kutub al-Ilmiyya, Beirut, Lebanon. The book is an original, one volume, two parts.