Ibn al-Bawwāb (Arabic: إِبْن ٱلْبَوَّاب), also known as Ali ibn-Hilal, Abu'l-Hasan, and Ibn al-Sitri, was an Arabic calligrapher and illuminator who lived in Baghdad. He is the figure most associated with the adoption of round script to transcribe the Qur'an. He most likely died around 1022 CE in Baghdad.
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