Al-Adab Al-Mufrad, Hadith 568 ⓘ
Anas said, "The Prophet, may Allah bless him and grant him peace, formed a pact of brotherhood between Ibn Mas'ud and az-Zubayr."
حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، قَالَ: حَدَّثَنَا حَمَّادُ بْنُ سَلَمَةَ، عَنْ ثَابِتٍ، عَنْ أَنَسٍ قَالَ: آخَى النَّبِيُّ صلى الله عليه وسلم بَيْنَ ابْنِ مَسْعُودٍ وَالزُّبَيْرِ.
also referenced under: Book 30, Hadith 31 (In-Book) & Book 30, Hadith 568 (English)