Bond of Brotherhood
The Holy Prophet (sa) formed a bond of brotherhood between Hazrat Abu Ayub Ansari (ra) and Hazrat Mus‘ab (ra) bin Umair.
(Ibn Abd al-Barr, Al-Isti‘ab fi Ma‘rifat al-Ashab, Vol. 2, Hazrat Khalid bin Zaid [Beirut, Lebanon: Dar al-Kutub al-‘Ilmiyyah, 1995], 200.) (Ibn Saad, Al-Tabaqat al-Kubra, Vol. 3, Hazrat Abu Ayub al-Ansari [Beirut, Lebanon: Dar al-Kutub al-Ilmiyyah, 1990], 368-369)