Columbia subject headings:
Harvard subject headings:
Perfection--Religious aspects--Islam
Religious life--Islam
Shīʻah--Doctrines
Sufism.
Princeton subject headings:
Perfection--Religious aspects--Islam.
Sufism.
Ṭabāṭabāʾī, Muḥammad Ḥusayn. Risālat al-wilāyah