Nu'man bin Buzruj says: Aswad the Liar came out; he was a man of Banu Ans. With him were 2 devils, one named Sahiq and the other Shaqiq, and they used to inform him of everything that happened in people's affairs. Aswad marched until he took Dhamar. Then he related the full story: how he married al-Marzubanah, the wife of Badhan, and how she gave him undiluted wine to drink until he was intoxicated. He entered Badhan's bed, which was made of feathers, and the bedding turned over on him. Fayruz and Khurrazadh bin Buzruj came in, and the woman indicated to them that he was in the bed. Fayruz seized him by his head and beard and wrung his neck until he broke it, and Ibn Buzruj stabbed him with a dagger and split him open from his collarbone to his pubic region, then cut off his head. They left, taking the woman with them along with whatever household goods they liked. Then he related another story, in which Fayruz came to the Commander of the Believers, Sayyiduna Umar bin al-Khattab (may Allah be pleased with him), who asked: Fayruz, how did you kill that liar? He replied: O Commander of the Believers, Allah killed him. He said: Yes, but tell me the story. So Fayruz related the whole story to him, and then went back to Yemen.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قتال أهل البغي / 16729