Ghiyas-ud-Din Zain-ul-Abidin () was the eighth sultan of the Shah Mir dynasty of Kashmir. He was known by his subjects as Bud Shah (the Great King). The first 35 years of his reign are described by Jonaraja in the Rajatarangini Dvitiya, while the subsequent years are described by his pupil, Srivara, in the Rajatarangini Tritiya. Rise to power Shahi Khan, a son of Sultan Sikander the ruler of Kashmir, was charged with the rule of the kingdom of Kashmir when his elder brother, Ali Shah, left the kingdom on a pilgrimage to Mecca. It was at this time that Ali Shah gave Shahi Khan the title of Zain-ul-Abidin. Although a religious man, Ali Shah was weak-willed and his desire to attain Mecca buckled under descriptions of the arduous journey ahead. He abandoned his pilgrimage when he arrived at the court of his father-in-law, the king of Jammu, and raised an army consisting of soldiers from Jammu and Rajauri in order to regain his throne. The ancient texts vary regarding why it was that Zain-ul-Abidin relinquished his recently acquired status without a fight but there is no disagreement that this is in fact what happened. Retiring to Sialkot, Zain-ul-Abidin sought the support of its chief, Jasrat Khokhar. Ali Shah became angered when this support was forthcoming and he rashly set out with his army to challenge Khokhar. The forces met at Thanna and Khokhar defeated the challenger, who had ignored the advice of his father-in-law to hold back until the Jammu army could join him. Zain-ul-Abidin was then able to return to the capital city of Srinagar, where he was welcomed by his subjects. The fate of Ali Shah is uncertain: he may have died in captivity or have been put to death by Khokhar. Reign Although fundamentally a peaceful man, Zain-ul-Abidin was protective of his territory. He raised and led an army to stabilise the fractious areas of Ladakh and Baltistan which had originally been conquered by his grandfather, Shihabu'd-Din, and then had become independent on his death until Sikander reasserted control. With the arrival of Ali Shah on the throne, the territories had once again begun to assert their independence and Zain-ul-Abidin recognised that they had an economic and strategic significance which entailed that they could not be allowed to secede. Similarly, he regained control of Ohind, the chief of which had been overcome by Sikander but had then