Sunan an-Nasa'i 3477

Arabic

أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا مَالِكٌ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ لاَعَنَ رَسُولُ اللَّهِ صلى الله عليه وسلم بَيْنَ رَجُلٍ وَامْرَأَتِهِ وَفَرَّقَ بَيْنَهُمَا وَأَلْحَقَ الْوَلَدَ بِالأُمِّ ‏.‏

Translation

It was narrated that Ibn 'Umar said:"The Messenger of Allah conducted the procedure of Li'an between a man and his wife, and he separated them and attributed the child to his mother

Authenticity

Sahih · Abu Ghuddah

Reference