Sahih Muslim 3752
صحيح مسلم#3752Sahihوَحَدَّثَنَا سَعِيدُ بْنُ مَنْصُورٍ، وَقُتَيْبَةُ بْنُ سَعِيدٍ، قَالاَ حَدَّثَنَا مَالِكٌ، ح وَحَدَّثَنَا يَحْيَى، بْنُ يَحْيَى - وَاللَّفْظُ لَهُ - قَالَ قُلْتُ لِمَالِكٍ حَدَّثَكَ نَافِعٌ، عَنِ ابْنِ عُمَرَ، أَنَّ رَجُلاً، لاَعَنَ امْرَأَتَهُ عَلَى عَهْدِ رَسُولِ اللَّهِ صلى الله عليه وسلم فَفَرَّقَ رَسُولُ اللَّهِ صلى الله عليه وسلم بَيْنَهُمَا وَأَلْحَقَ الْوَلَدَ بِأُمِّهِ قَالَ نَعَمْ .
Nafi' reported on the authority of Ibn Umar (Allah be pleased with them) that a person invoked curse on the wife during the lifetime of Allah s Messenger (ﷺ), so he effected separation between them and traced the lineage of the son to his mother
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: 19:10