Columbia subject headings:
Harvard subject headings:
Rāzī, Fakhr al-Dīn Muḥammad ibn ʻUmar, 1149 or 1150-1210.
Sufism
Princeton subject headings:
Rāzī, Fakhr al-Dīn Muḥammad ibn ʻUmar, 1149 or 1150-1210.
Sufism.