Jami` at-Tirmidhi 1203
جامع الترمذي#1203SahihIbn 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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufHasan Sahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 13:30