 in 1641 he subdued the rebellion of Raja Jagat Singh Pathania of the hill-state of Mau-Paithan (Himachal Pradesh).In 1638 the fort of Kandahar was surrendered by its Safavid Persian commander, Ali Mardan Khan, to Shah Jahan.The emperor's son Shuja, accompanied by Jai Singh, was sent to take delivery of this important fort.