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- Ibn al-ʻArabī, 1165-1240. Kashf al-rān ʻan wajh al-bayān1
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- Ibn Ḥabib, Jacob ben Solomon, 1445?-1515 or 15161
- Ibn Ḥajar al-Haythamī, Aḥmad ibn Muḥammad, approximately 1503-approximately 1566. Iʻlām bi-qawāṭiʻ al-Islām1
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- Ijmāʻ (Islamic law)1
- Illegible markings1
- Illumination of books and manuscripts, Arab1
- Illumination of books and manuscripts, Mexican1
- Illumination of books and manuscripts, Thai1
- Illusion (Philosophy)1