<P> The site had been occupied since at least 100 BCE, and now has remains of Hindu & Buddhist temples similar to those at Ajanta and Ellora . </P> <P> The city is said to have been founded c. 1187 by Bhillama V, a Yadava prince who renounced his allegiance to the Chalukyas and established the power of the Yadava dynasty in the west . During the rule of the Yadava king Ramachandra, Alauddin Khalji of Delhi Sultanate raided Devagiri in 1296, forcing the Yadavas to pay a hefty tribute . When the tribute payments stopped, Alauddin sent a second expedition to Devagiri in 1308, forcing Ramachandra to become his vassal . </P> <P> In 1328, Muhammad bin Tughluq of Delhi Sultanate transferred the capital of his kingdom to Devagiri, and renamed it Daulatabad . Some scholars ague that the idea behind transfering the capital was rational, because it lay more or less in the centre of the kingdom, and geographically secured the capital from the north - west frontier attacks . </P> <P> In the Daulatabad fort, he found the area arid & dry . Hence he built a huge reservoir for water storage & connected it with a far - away river . He used siphon system to fill up the reservoir . However, his capital - shift strategy failed miserably due to lack of application & other factors . Hence he shifted back to Delhi & earned him the moniker "Mad King". </P>

Who change the name of devgiri to daulatabad