Sahih Muslim 6413
صحيح مسلم#6413Sahihحَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ الْحَنْظَلِيُّ، وَأَحْمَدُ بْنُ عَبْدَةَ، - وَاللَّفْظُ لإِسْحَاقَ - قَالاَ أَخْبَرَنَا سُفْيَانُ، عَنْ عَمْرٍو، عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ، قَالَ فِينَا نَزَلَتْ { إِذْ هَمَّتْ طَائِفَتَانِ مِنْكُمْ أَنْ تَفْشَلاَ وَاللَّهُ وَلِيُّهُمَا} بَنُو سَلِمَةَ وَبَنُو حَارِثَةَ وَمَا نُحِبُّ أَنَّهَا لَمْ تَنْزِلْ لِقَوْلِ اللَّهِ عَزَّ وَجَلَّ { وَاللَّهُ وَلِيُّهُمَا} .
Jabir b. Abdullah reported that it was concerning them (the Ansar) that this verse was revealed, that when the two groups amongst you were about to lose heart and Allah was the Guardian of them both. This concerned Banu Salama and Banu Haritha and we did not like that Allah, the Exalted and Glorious, should not have revealed this verse for the fact that Allah (gave an assurance) of being the Guardian of both
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: 44:243