(1) Abd al-Rahman ibn Bushr ibn al-Hakam, Abu Muhammad, son of the imam Abu Abd al-Rahman al-Abdi al-Naysaburi. A muhaddith (hadith scholar), thiqah (trustworthy), jawad (generous). He was reported by al-Bukhari, Muslim, and others. References: Siyar A‘lam al-Nubala (12/340); Tahdhib al-Tahdhib (6/144). (2) Malik ibn Tawq ibn Itab al-Taghlibi, Abu Kulthum, emir of the Arabs of al-Sham, from the noble knightly lineages. He governed Damascus and al-Urdunn (Jordan), where he died. With the assistance of al-Rashid he founded the town of al-Rahbah on the Euphrates between al-Raqqa and Baghdad, later known as Rahbat Malik after him; it grew populous in his days. He was eloquent and composed poetry. References: Mu‘jam al-Buldan (3/34); Fawat al-Wafayat (3/231); al-Nujum al-Zahirah (3/32). (3) Abu Zayd, physician, historian, and translator. His father was a pharmacist from al-Hirah; he accompanied Hunayn to Basra, where he studied Arabic with Khalil ibn Ahmad, then moved to Baghdad to study medicine under Yuhanna ibn Masawayh and others. He mastered Greek, Syriac, and Persian, and joined al-Ma’mun, who appointed him head of the translation bureau. He abridged many works of Hippocrates and Galen, clarifying their meanings, and al-Ma’mun rewarded him in gold equal in weight to the books he translated into Arabic. His biography appears in Ibn Abi Usaybi‘a’s Tabaqat al-Atibba (1/184); Wafayat al-Ayan (2/217); al-Ibar (2/20); Siyar A‘lam al-Nubala (12/492); al-Alam (al-Zarkali) (2/277). (4) Thabit ibn Qurrah ibn Zahrun al-Harrani, Abu al-Hasan, a Sabi (Sabian), physician, mathematician, and philosopher. In his time none equaled him in medicine or any branch of philosophy. He authored around 150 works, including al-Dhakhira fi ‘ilm al-Tibb. He died in 288 AH. Biographical entries: Tabaqat al-Atibba (1/215); Wafayat al-Ayan (1/313); al-Alam (al-Zarkali) (2/98). (5) Wafayat al-Ayan (2/218). (6) “Shalus”: a town in the Tabaristan mountains and one of its frontier outposts. (Yaqut.)