Ala al-Din Husayn

In order to avenge the death of his brothers, Ala al-Din, launched a campaign against Bahram in 1150.^[4] The Ghaznavid and Ghurid armies met at Tiginabad and through the heroic efforts of Kharmil Sam-i Husain and Kharmil Sam-i Banji the Ghaznavid army was routed. Bahram rallied elements of his army at the hot springs, Jush-i Ab-i Garm, but was again routed and fled back to Ghazna.^[5] Bahram again rallied the remaining elements of his army with the addition of the city's garrison, but again his army was routed and the city was burned by the Ghurids. Following this defeat, Bahram fled to the Ghaznavid territories in India. Ghazna was then subjected to seven days of pillage and rapine, in which 60,000 of the city were killed. All the tombs of the Ghaznavid rulers, with the exception of Mahmud, Mas'ud and Ibrahim, were broken open and the remains burned. He also destroyed the city of Bust.^[6] From these events, Ala ad-Din Husayn gained the nickname, Jahānsūz (meaning the World Burner).^[7][8]

After having greatly expanded Ghurid power, he had gone from a tribal chief to a king of an empire, he then took the title of Sultan al-Muazzam. In 1152, he declared independence against his Seljuq overlords, and captured Balkh. He was, however, shortly defeated and captured by Ahmad Sanjar, who then aided the Ghaznavids in recapturing Ghazni.^[8] Ala al-Din Husayn remained a prisoner for two years, until he was released in return for a heavy ransom to the Seljuqs.

Meanwhile, a rival of Ala al-Din named Husayn ibn Nasir al-Din Muhammad al-Madini had seized Firuzkuh, but was murdered at the right moment when Ala al-Din returned to reclaim his ancestral domain. Ala al-Din spent the rest of his reign in expanding the domains of his kingdom; he managed to conquer Garchistan, Tukharistan, and Bamiyan, which he later divided amongst his brothers. He died in 1161, and was succeeded by his son Sayf al-Din Muhammad.