Farid al-Din Attar 
Muslim Saints and Mystics [EPUB ebook] 
Episodes from the Tadhkirat al-Auliya’ (Memorial of the Saints)

This is a major work of Islamic mysticism by the great thirteenth-century Persian poet, Farid al-Din Attar. Translated by A J Arberry, Attar’s work and thought is set in perspective in a substantial introduction.