The Messenger of Allah ﷺ said, "While I was sleeping, the treasures of the earth were brought to me, and two bracelets of gold were placed in my hands. They felt heavy upon me, so it was revealed to me that I should blow on them. I blew on them and they vanished. I interpreted them as the two liars between whom I find myself, the one of Sana and the one of Yamamah."
قال رسول الله ﷺ: بينا أنا نائم أتيت بخزائن الأرض، فوضع في كفي سواران من ذهب، فكبرا علي، فأوحي إلى أن انفخهما، فنختهما فذهبا، فأولتهما الكذابين اللذين أنا بينهما: صاحب صنعاء، وصاحب اليمامة.
Bukhari narrated it in al-Maghazi (4375) and Muslim in al-Ruya (22:2274), both by way of Abdul-Razzaq, from Maamar, from Hammam, that he heard Abu Hurairah say what has been mentioned. The man of Sanaa is Aswad Ansi, and the man of Yamamah is Musaylima the Liar, as stated explicitly in Bukhari in al-Manaqib (3621).