Name the scholar who was taken to Ghazni by Sultan Mahmud of Ghazni.

NCERT (2026-27): “1.1 From Khwarizm to the Punjab … Al-Biruni was born in 973, in Khwarizm in presentday Uzbekistan. Khwarizm was an important centre of learning, and Al-Biruni received the best education available at the time. He was well versed in several languages: Syriac, Arabic, Persian, Hebrew and Sanskrit. Although he did not know Greek, he was familiar with the works of Plato and other Greek philosophers, having read them in Arabic translations. In 1017, when Sultan Mahmud invaded Khwarizm, he took several scholars and poets back to his capital, Ghazni; Al-Biruni was one of them. He arrived in Ghazni as a hostage, but gradually developed a liking for the city, where he spent the rest of his life until his death at the age of 70. It was in Ghazni that Al-Biruni developed an interest in India.…”