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- Izz al-Din ibn Hibatullah ibn Abi l-Hadid1
- Ja'far Kashfi1
- Jaafar Al-Sadiq1
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- Jarmakī, Abū Bakr ibn al-Ṭāhir, 18th cent1
- Jayyānī, al-Ḥusayn ibn Muḥammad, 1035-1105?1
- Junayd ibn Sandal Baghdādī1
- Kabbāshī, Aḥmad1
- Kamāl al-Dīn ibn Āsāyish Shirwānī1
- Karim Khan Kermani1
- Kaḥḥāl, ʻAlī ibn ʻĪsá, -1038 or 10391
- Khalīl Ibn Walī1
- Khalīl ibn Shāhīn1
- Khalīl ibn al-Ghāzī Qazwīnī1
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- Khwājakīzādah, Muṣṭafá ibn Muḥammad, d. 15901
- Khāṭirī, Aḥmad ibn Muḥammad1
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