The Ghurid sultanate was brought to prominence in 1150 by Ala Al-Din Husayn, who overthrew the previous Ghaznavid dynasty and burned their capital city, Ghazna, killing up to 60,000 inhabitants. A historian of the dynasty, Minhaj al-Siraj Juzjani, wrote that the remaining citizens of Ghazna, imprisoned, were used to transport building supplies to Firozkoh. Juzjani also claims that the blood of the prisoners was combined with mud to form additional building materials.[1]