- Eunuchs1
- Fingernails1
- Free will and determinism--Religious aspects--Islam1
- Friendship--Philosophy1
- Friendship--Religious aspects--Islam1
- Gabriel (Archangel)1
- God (Islam)--Mercy1
- Hadith--Texts1
- Headgear--Religious aspects--Islam1
- Hārūn al-Rashīd, Caliph, approximately 763-8091
- Ibn Bābawayh al-Qummī, Muḥammad ibn ʻAlī, 918 or 19-991 or 2. Man lā yaḥḍuruhu al-faqīh1
- Ibn Yūsuf al-Ṣafī, Muḥammad, 1421-14871
- Ibn al-Bārizī, Hibat Allāh ibn Najm al-Dīn, 1247-13381
- Ibn al-Jarādiqī, Muḥammad ibn ʻAlī, approximately 1373-14571
- Ibn al-Ṣābūnī, Muḥammad ibn ʻAlī, 1207 or 1208-1281 or 12821
- Ibn ʻUmrān, Muḥammad ibn Mūsá, 1392-14691
- Ibn Ḥajar al-Haythamī, Aḥmad ibn Muḥammad, approximately 1503-approximately 1566. Fatḥ al-mubīn li-sharḥ al-Arbaʻīn1
- Ibn Ḥajar al-Haythamī, Aḥmad ibn Muḥammad, approximately 1503-approximately 1566. Iʻlām bi-qawāṭiʻ al-Islām1
- Ijtihād (Islamic law)1
- Ikmāl (Ibn Mākūlā, ʻAlī ibn Hibat Allāh)1