In chittaurgarh after the death of husband Bhoj Raj of Meerabai ji her brother-in-law Rana Bikramaditya wants to marry with Meerabai ji, After rejection of proposal the rana angred on Meerabai ji. Rana want to kill her. He give him poison which become turned a nectar. after that he send a black king kobra in box when she open the box it become a shaligram stone ( resemble of lord krishna).