- Hadith (Shiites)2
- Ibn Saʻādah, Aḥmad ibn ʻAlī, active 13th century. Risālat al-ʻilm2
- Ibn Sharaf Shāh, Ḥasan ibn Muḥammad, 1247 or 1248-1315 or 1316. Wāfiyah fī sharḥ al-Kāfiyah2
- Ibn al-ʻArabī, 1165-12402
- Interest (Islamic law)2
- Islam and politics2
- Islam--Rituals2
- Islam--Theology2
- Islamic eschatology2
- Jaʻbarī, Arslān ibn Yaʻqūb, -1300. Risālat al-tawḥīd2
- Jumʻah2
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyah ʻalá Sharḥ Shamsīyah2
- Khamrīyah (Ibn al-Fāriḍ, ʻUmar ibn ʻAlī)2
- Khiḍr (Legendary character)2
- Kāfiyah (Ibn al-Ḥājib, ʻUthmān ibn ʻUmar)2
- Lamaʻāt (ʻIrāqī, Fakhr al-Dīn Ibrāhīm)2
- Language and languages--Philosophy2
- Legacies (Islamic law)2
- Manāzil al-sāʼirīn (Anṣārī al-Harawī, ʻAbd Allāh ibn Muḥammad)2
- Martyrdom--Islam2