Tadhkiratul Awliya by Farid al-Din Attar of Nishapur is regarded as one of the most important works of Sufism. It is acclaimed as of the rare collection of the biographies of Muslim Sufi saints between the 6th and 13th century.

The book narrates teaching stories from the lives of the following 38 Muslim Sufi saints:

Hasan of Basra

Malek Ibn Dinar

Habib al-Ajami

Rabe‘a al-Adawiya (Rabia Basri)

Al-Fozail Ibn Iyaz

Ebrahim Ibn Adham

Beshr Ibn al-Hareth

Dho ‘l-Nun al-Mesri

Abu Yazid al-Bestami

Abd Allah Ibn al-Mobarak

Sofyan al-Thauri

Shaqiq of Balkh

Dawud al-Ta’i

Al-Mohasebi

Ahmad Ibn Harb

Hatem al-Asamm

Sahl Ibn Abd Allah al-Tostari

Ma‘ruf al-Karkhi

Sari al-Saqati

Ahmad Ibn Khazruya

Yahya Ibn Mo‘adh

Shah Ibn Shoja‘

Yusof Ibn al-Hosain

Abu Hafs al-Haddad

Abo’l-Qasem al-Jonaid

Amr Ibn ‘Othman

Abu Sa‘id al-Kharraz

Abu ‘l-Hosain al-Nuri

Abu Othman al-Hiri

Ibn Ata

Somnun

al-Termedhi

Khair al-Nassaj

Abu Bakr al-Kattani

Ibn Khafif

Al-Hallaj (Mansoor)

Ebrahim al-Khauwas

Al-Shebli