Sahih al-Bukhari, Book 78, Hadith 111 (In-Book) ⓘ
Narrated `Asim: I said to Anas bin Malik, "Did it reach you that the Prophet said, "There is no treaty of brotherhood in Islam'?" Anas said, "The Prophet made a treaty (of brotherhood) between the Ansar and the Quraish in my home."
حَدَّثَنَا مُحَمَّدُ بْنُ صَبَّاحٍ، حَدَّثَنَا إِسْمَاعِيلُ بْنُ زَكَرِيَّاءَ، حَدَّثَنَا عَاصِمٌ، قَالَ قُلْتُ لأَنَسِ بْنِ مَالِكٍ أَبَلَغَكَ أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ " لاَ حِلْفَ فِي الإِسْلاَمِ " . فَقَالَ قَدْ حَالَفَ النَّبِيُّ صلى الله عليه وسلم بَيْنَ قُرَيْشٍ وَالأَنْصَارِ فِي دَارِي.
also referenced under: Hadith 6083 (DarusSalam) & Volume 8, Book 73, Hadith 106 (USC-MSA)