Sahih Muslim 3751
صحيح مسلم#3751Sahihوَحَدَّثَنَا أَبُو غَسَّانَ الْمِسْمَعِيُّ، وَمُحَمَّدُ بْنُ الْمُثَنَّى، وَابْنُ، بَشَّارٍ - وَاللَّفْظُ لِلْمِسْمَعِيِّ وَابْنِ الْمُثَنَّى - قَالُوا حَدَّثَنَا مُعَاذٌ، - وَهُوَ ابْنُ هِشَامٍ - قَالَ حَدَّثَنِي أَبِي، عَنْ قَتَادَةَ، عَنْ عَزْرَةَ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، قَالَ لَمْ يُفَرِّقِ الْمُصْعَبُ بَيْنَ الْمُتَلاَعِنَيْنِ . قَالَ سَعِيدٌ فَذُكِرَ ذَلِكَ لِعَبْدِ اللَّهِ بْنِ عُمَرَ . فَقَالَ فَرَّقَ نَبِيُّ اللَّهِ صلى الله عليه وسلم بَيْنَ أَخَوَىْ بَنِي الْعَجْلاَنِ .
Sa'id b. Jubair reported that Mus'ab b. Zubair did not effect separation between the Mutala'inain (invokers of curses). Sa'id said:It was mentioned to 'Abdullah b. Umar (Allah be pleased with them) and he said: Allah's Apostle (ﷺ) effected separation between the two members of Banu al-'Ajlan
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: 19:9