H 425 - It is narrated from Ahmad bin Idris from Ibn Qutaibah from Ibn Shazan from Ibn Mahbub from Thumali that he said:

I said to Imam Ja’far Sadiq : Your respected father, Imam Muhammad Baqir used to state that the coming of Sufyani is inevitable, the call from the sky is inevitable, the rising of the sun from the west is inevitable and he used to mention the same about many things. Imam Ja’far Sadiq said: And mutual discord in Bani so-and-so is inevitable, killing of Nafse Zakiyyah is inevitable and the rising of Imam Qaim is also inevitable. I asked: What the call from the sky would be? A caller will call out from the sky in the morning: Know that the truth is with Imam Ali and his Shia. And then in the evening the Iblis will call out from the sky: Know that the truth is with Uthman and his followers. This call from Iblis would make the people of falsehood fall into doubts.