Sahih (Sahih al-Bukhari)
حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا سُفْيَانُ، قَالَ كَانَ عَمْرٌو يَقُولُ سَمِعْتُ جَابِرَ بْنَ عَبْدِ اللَّهِ ـ رضى الله عنهما ـ يَقُولُ شَهِدَ بِي خَالاَىَ الْعَقَبَةَ. قَالَ أَبُو عَبْدِ اللَّهِ قَالَ ابْنُ عُيَيْنَةَ أَحَدُهُمَا الْبَرَاءُ بْنُ مَعْرُورٍ.
Narrated Jabir bin `Abdullah:I was present with my two maternal uncles at Al-`Aqaba (where the pledge of allegiance was given). (Ibn 'Uyaina said, "One of the two was Al-Bara' bin Marur)