rajasuya

Rajasuya (Imperial Sacrifice or the king's inauguration sacrifice) was a yajna or sacrifice, performed by the ancient kings of India who considered themselves powerful enough to be an emperor. It is described in detail in the Mahabharata. Rajasuya, like the ashwamedha, would occur after the return of generals of the king (in most cases his own kinsmen, like his brother or son) from a successful military campaign. Only the king with Sovereign power is allowed to do that.