Sunan an-Nasa'i
Sunan an-Nasa'i 3477
Arabic hadith text
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
Qutaybah informed us; Malik narrated to us, from Nafi, from Ibn Umar, who said: The Messenger of Allah performed li'an between a man and his wife, separated them, and attributed the child to the mother.
Translation notes
Li'an is the formal mutual imprecation procedure used when a husband accuses his wife of adultery without witnesses.