He really doesn't have strong control really much further than this region around Kufa. So he gets into a treaty with Mawawiya, where he gives control of the caliphate to Mawawiya. And according to that treaty, as long as Mawawiya allows the next caliph, after his death, to be based on some form of an election, let the Islamic world choose the successor afterwards. But then later, Hassan, he goes into something of retirement. He dies in his mid-40s. And some accounts say that he was assassinated, poisoned by his wife, maybe due to the Umayyads, who didn't want him around. And then in 680, Mawawiya dies.