Musnad Abu Ya'la al-Mawsili 42:90

Muhammad ibn al-Ala narrated to us, Yunus ibn Bukayr narrated to us, from Muhammad ibn Ishaq, from Yazid ibn Abdullah ibn Qusayt, from Ata ibn Yasar, from Abu Sa’id, who said: The Messenger of Allah (may Allah bless him and grant him peace) mounted the pulpit and said: "O people, I had been shown the Night of Decree (Laylat al-Qadr), but it was snatched away from me, and perhaps that is better. And I saw as if there were two bracelets of gold on my forearms, so I disliked them, and I blew upon them, and they flew away. I interpreted them as these two liars: the master of Yemen, whose name was al-Aswad ibn Ka’b al-Ansi, and the master of Yamamah." And al-Aswad had spoken during the time of the Prophet (may Allah bless him and grant him peace).