Hamza ibn Abdul Mutallib committed to Islam

portrayed as an Ottoman soldier of 1595
from the Siyer-i Nebi

Turkey, Istanbul; c. 1594
From Enzyklopädie des Islam
When the Prophet Muhammad is depicted in historical or religious works from the world of Islam, he is almost always shown veiled because of his exalted position, though there are exceptions.
The miniature comes from a six-volume edition of Siyar-i Nabi that was commissioned by the Ottoman sultan Murad III and completed in the palace workshops in Istanbul in 1595, shortly after the sultan’s death.

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Ottoman Illustrations of Costume and Soldiers