1-Lineage.2-Important Events of His Life.2.1-Participation in the Second Pledge of al-'Aqaba.2.2-Host of the Prophet (s).2.3-Defender of the Succession of Ali (a).2.4-In the Group of the Compilers of the Qur'an.2.5-Participating in Ghazawat (Battles of the Prophet (s)).2.6-Participating in the Siege of the House of 'Uthman.2.7-Participating in the Battles at the Time of Imam Ali (a).2.8-The Governor of Medina Assigned by Imam Ali (a).2.9-Participating in the Battle against Romans.3-Demise.4-Visiting his Grave by Muslims and Romans.5-Narrators from Abu Ayyub.6-Deeming him Reliable or Praising him.7-Notes.8-References.