modern Afghanistan, while Kandahar , Zabulistan , Ghazni, Kabulistan and the Afghanistan region formed the frontier between Khorasan and Hindustan . [79] [36] [37] A miniature from Padshahnama depicting the surrender of the Safavid garrison of Kandahar in 1638 to the Mughals , which was re-taken by the Safavids in 1649