When Hazrat Utbah (ra) bin Ghazwan migrated from Mecca to Medina, the Holy Prophet (sa) established a bond of brotherhood between him and Hazrat Abu Dujana (ra).
(Ibn Saad, Al-Tabaqat al-Kubra, Vol. 3, Abu Dujanah [Beirut, Lebanon: Dar al-Kutub al-Ilmiyyah, 1990], 420)