What has been related about Li'an Jami` at-Tirmidhi 1203
Arabic hadith text
أَنْبَأَنَا قُتَيْبَةُ، أَنْبَأَنَا مَالِكُ بْنُ أَنَسٍ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ لاَعَنَ رَجُلٌ امْرَأَتَهُوَفَرَّقَ النَّبِيُّ صلى الله عليه وسلم بَيْنَهُمَا وَأَلْحَقَ الْوَلَدَ بِالأُمِّ. قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ . وَالْعَمَلُ عَلَى هَذَا عِنْدَ أَهْلِ الْعِلْمِ
Translation
Ibn Umar narrated
"A man pronounced the Li'an on his wife, and the Prophet separated the two of them, and he decide that the child belonged to the mother."