Kīmīyā-yi Sa'ādat is a book written by Abū Ḥāmid Muḥammad ibn Muḥammad al-Ghazālī, a Persian theologian, philosopher, and prolific Muslim author, often regarded as one of the greatest systematic thinkers and mystics of Islam, in Persian. Wikipedia
Author: Al-Ghazali
Publication date: Early 12th century
Language: Classical Persian
Original title: Kimiya-yi Sa'ādat (Persian: کیمیای سعادت)