SA''ID B DANIL B BISR''S LIBRARY OF GREEK MANUSCRIPTS IN THE 12<sup>TH</sup> CENTURY
In this paper I present the investigation of five Greek manuscripts of the 9<sup>th</sup>-11<sup>th</sup> centuries, which were collected and deposited at the Monastery of St. Catherine by the person named Sa'id b DanIl b Bisr. These manuscripts were marked by his Arabic record, presumably dating back to the 12<sup>th</sup> century. Thus, we have a trace of the private library of the 12<sup>th</sup> century, owned by an Arabic-speaking collector of «antique» Greek manuscripts. In the paper the dating and localization of all five Greek codes were clarified. In addition, the study of the majuscule fragment NE MG 25 and the Arabic record on it allows us to make substantial amendment to the reconstruction of the ancient stage of the manuscript tradition of works of Gregory of Nazianzus: establishing the existence in the 9<sup>th</sup> century Byzantium a two-volume edition of Nazianzus' Homilies.