It is narrated from Sayyiduna Anas (may Allah be pleased with him) that he said: "The Messenger of Allah (peace and blessings be upon him) established brotherhood among his Companions: he established the bond of brotherhood (mu'akhah) between Sayyiduna Abu al-Darda' and Sayyiduna Salman al-Farisi (may Allah be pleased with them both), and between Sayyiduna Awf bin Malik and Sayyiduna al-Sa'b bin Jaththamah (may Allah be pleased with them both)."
The chain of this hadith is hasan (good); Imam Abu Ya'la al-Mawsili narrated it in his Musnad.
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب المناقب / 4013
Hadith Gradingمحدثین:إسناده حسن
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :إسناده حسن » «أخرجه مسند أبي يعلى برقم: 3404»