Ibn al-Ṣabbāgh, Muḥammad ibn Abī al-Qāsim, Robert Garrett, and Princeton University. “Kitāb Durrat Al-asrār Wa-Maʻdin Al-anwār fī taqyīd baʻḍ mā Li-sayyidnā Wa-ṣafwat Al-abrār sayyidī Abī Al-Ḥasan ʻAlī Ibn ʻAbd Allāh Ibn ʻAbd Al-Jabbār Al-Shādhilī,” n.d.