Mosul occupied a prestigious status in Islamic history, by dint of its geographical location and it was not far from the repere ussious of the decline of the influence of the Abbasid Caliphate and its weakness in Baghdad, which resulted in the emergence of independent emirates and countries such as the Hamdanid state (293-381AH / 905-991AD)which states about ninety years and Mosul witnessed during that period a scientific and literary renaissance through due to the support of its rulers and the interest of scientists, which led to interaction of the scientific life with the ruling authority in the city of Mosul