Sahih Muslim 6463
صحيح مسلم#6463Sahihحَدَّثَنِي أَبُو جَعْفَرٍ، مُحَمَّدُ بْنُ الصَّبَّاحِ حَدَّثَنَا حَفْصُ بْنُ غِيَاثٍ، حَدَّثَنَا عَاصِمٌ الأَحْوَلُ، قَالَ قِيلَ لأَنَسِ بْنِ مَالِكٍ بَلَغَكَ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " لاَ حِلْفَ فِي الإِسْلاَمِ " . فَقَالَ أَنَسٌ قَدْ حَالَفَ رَسُولُ اللَّهِ صلى الله عليه وسلم بَيْنَ قُرَيْشٍ وَالأَنْصَارِ فِي دَارِهِ .
It was said to Anas b. Malik:You must have heard this that Allah's Messenger (ﷺ) said: There is no alliance (hilf) of brotherhood in Islam. Anas said: Allah's Messenger (ﷺ) established the bond of fraternity between the Quraish and the Ansar in his home
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 44:292