I was informed: "The calligraphy cite the name of the Master and the first of the mouazzins (who calls to the prayer & recite Koran) Ya Hazret-i Bilal Habeşi (ô his Holiness Bilal Habeshi -Bilal the Ethiopian-)"
The calligraphy cite the name of the Master and the first of the mouazzins (who calls to the prayer & recite Koran) Ya Hazret-i Bilal Habeşi (ô his Holiness Bilal Habeshi -Bilal the Ethiopian-)