Sahih al-Bukhari 4748
صحيح البخاري#4748Sahihحَدَّثَنَا مُقَدَّمُ بْنُ مُحَمَّدِ بْنِ يَحْيَى، حَدَّثَنَا عَمِّي الْقَاسِمُ بْنُ يَحْيَى، عَنْ عُبَيْدِ اللَّهِ، وَقَدْ سَمِعَ مِنْهُ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ ـ رضى الله عنهما ـ أَنَّ رَجُلاً، رَمَى امْرَأَتَهُ فَانْتَفَى مِنْ وَلَدِهَا فِي زَمَانِ رَسُولِ اللَّهِ صلى الله عليه وسلم فَأَمَرَ بِهِمَا رَسُولُ اللَّهِ صلى الله عليه وسلم فَتَلاَعَنَا كَمَا قَالَ اللَّهُ، ثُمَّ قَضَى بِالْوَلَدِ لِلْمَرْأَةِ وَفَرَّقَ بَيْنَ الْمُتَلاَعِنَيْنِ.
Narrated Ibn `Umar:A man accused his wife of illegal sexual intercourse and denied his paternity to her (conceived) child during the lifetime of Allah's Messenger (ﷺ). Allah's Messenger (ﷺ) ordered them both to do Mula'ana as Allah decreed and then gave his decision that the child would be for the mother, and a divorce decree was issued for the couple involved in a case of Mula'ana
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 al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 65:270