مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3918
Musnad of Abdullah bin Mas'ood
It was narrated that 'Abdullah said: A black slave came and joined the Prophet (ﷺ). He died and was brought to the Prophet (ﷺ), who said: "Look and see whether he left anything?” They said: He left two dinars. He said: "Two brands of fire.”
Musnad Ahmad 3943Its isnad is hasan]