Muhammad Sultan
Before his death in 1599 Ishaq even named Muhammad Sultan the Naqshbandi Grand Master-Ishaq's spiritual successor-thus assuring the "Ishaqiyya's" continued status in the region. Khoja Yahiya, son of Khoja Ishak, was granted villages "Faizabad" near Kashgar and also "Sang Kash" near Khotan together with exclusive right to mine jade in Khotan district by Muhammad Khan.