Musnad Ahmad 25:515

Ya'qub narrated to me, he said: My father narrated to us, from Salih, he said: Ubaydullah said: I asked Abdullah ibn Abbas about the vision of the Messenger of Allah, may Allah bless him and grant him peace, which he mentioned. Ibn Abbas said: It was mentioned to me that the Messenger of Allah, may Allah bless him and grant him peace, said: "While I was sleeping, I was shown that two bracelets of gold were placed in my hands, so I was alarmed by them and disliked them. Then permission was granted to me, so I blew upon them and they flew away. I interpreted them as two liars who would emerge." Ubaydullah said: "One of them was al-Ansi, whom Fayruz killed in Yemen, and the other was Musaylimah."