Al-Akhdari

Sayyidi ʻAbd al-Raḥmān ibn Muḥammad al-Ṣaghīr ibn Muḥammad ibn Sayyidi ʿĀmir al-Akẖḍarī al-Bīsīkrī (Arabic: سيدي عبد الرحمن بن محمد الصغير بن محمد بن سيدي عمرو الأخضري; 1512–1575), better known as Al-Akẖḍari (Arabic: الأخضري), was an Arab poet, logician, astronomer and Maliki jurist. He was the author of the highly popular didactic poem "Al-Sullam al-murawnaq fī ʻilm al-manṭiq" ("The Ornamented Ladder into the Science of Logic"). The 144-line poem, a versification of Al-Abhari's Kitab al-Isaghuji, outlines the principles of Islamic logic and explains how logic could be used to support the Islamic creed ('aqidah) and jurisprudence (fiqh). The work is studied across the Muslim world as a primer on logic and is often read in conjunction with al-Akhdari's own prose commentary. He is also known to have written another work, "al-Jawhar ul-Maknun" or "Al-Jawahir al-Maknuna fi'l-ma'ni wa'l-bayan wa'l-badi".