Ibn 'abbas narrated fro Abu Hurairah that the Messengr of Allah (s.a.w) said:
"I had a dream while sleeping as if there were two gold bracelets in my hands which bothered me very much. So it was reveled to me to blow them off. I blew them off and they flew away. I interpreted thwm to be two liars who would appear after me. One of them caled Masalamah of Yamamah, and (the other) Al-'ansi of San'a'." (sahih) (DE)
English reference (DE): Vol. 4, Book 8, Hadith 2292 (DE)
Arabic reference (DE): Book 34, Hadith 2461 (DE)