Bashir ibn Sa'd

Abu al-Nu'man Bashir ibn Sa'd al-Ansari (Arabic: بَشِيرٍ بْنُ سَعْدٍ, romanized: Abū al-Nuʿmān Bashīr ibn Saʿd al-Anṣārī; died 633 CE) was a prominent companion (Sahaba) of the Islamic prophet Muhammad and a leader of the Banu Khazraj tribe in Medina. A veteran of the Battle of Badr, Bashir was among the early converts from the Ansar and was one of the few individuals of his era literate in Arabic.

Bashir is historically best known for his decisive role during the Saqifah gathering following Muhammad's death in 632 CE. He was the first member of the Ansar to pledge allegiance (Bay'ah) to Abu Bakr, an act credited with breaking the tribal deadlock between the Khazraj and Banu Aws and ensuring the stability of the early Rashidun Caliphate. He served as a military commander in several expeditions during Muhammad's lifetime and was later martyred during the Muslim conquest of Persia at the Battle of Ayn al-Tamr while serving under Khalid ibn al-Walid.