In the meantime, Shaikh Kalifa's follower Hasan Juri had been preaching in towns all across Khurasan, with great success. His accomplishments attracted the suspicion of the government authorities, and in May 1336 he fled to eastern Iraq. When he returned some years later, Togha Temur's lieutenant and commander of the Ja'un-i Qurban Arghun Shah had him arrested in 1339 or 1340. He was eventually released, perhaps due to the insistence of Mas'ud, who soon after decided to take advantage of Hasan Juri's popularity. He joined Hasan's order as a novice, and had him proclaimed as joint ruler. Hasan Juri proclaimed that the Twelfth Imam would soon return. While the sharing of power began well, differences quickly emerged between the two. Mas'ud believed in accepting the nominal suzerainty of Togha Temur, while Hasan Juri was intent on establishing a Shi'i state. The two rulers each gained bases of support; the former had his family and the gentry, while the latter had the dervishes, the aristocracy, and the trade guilds. Both also had their own armed forces; Mas'ud had 12,000 armed peasants and a bodyguard of 700 Turkish slave troops, while Hasan Juri had an army composed of artisans and merchants.