For Shabbat Vayigash (Genesis 44:18-47:27), Maqam BAYAT is applied to the prayers according to some sources. According to Arabic sources, the definition of the word ‘BAYAT’ is an oath of allegiance to an emir when one sells themselves and pledges their loyalty. In our case, the BAYAT is performed by Judah, speaking on behalf of his brothers, who sells himself completely to Joseph (the emir) and declares loyaly to him. Similarly, Maqam BAYAT is used at a Bar Mitzvah, because one makes the BAYAT commitment to observe the missvot and declare loyalty to God. According to other sources, Maqam MAHOUR (Shrem source) or SIGAH (Damascus…