Sahih al-Bukhari 3890
Sahih al-Bukhari · Book 63: Merits of the Helpers in Madinah (Ansaar) · The deputation of the Ansar to the Prophet (saws) at Makkah, and the Al-Aqaba
Narrated Jabir bin `Abdullah:
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 .
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.")