خراسان الكبرى
Abu al-Husayn Ahmad bin Yahya ben Isaac al-Rawandi was born in 827 CE in Greater Khorasan, modern-day northwest Afghanistan. Al-Rawandi was born in Basra during the reign of the Abbasid Caliph Al-Ma'mun. His father, Yahya, was a Jewish scholar who converted to Islam and schooled Muslims on refuting the Talmud.