Jami` at-Tirmidhi 1152
جامع الترمذي#1152SahihUmm Salamah narrated that The Messenger of Allah said:“No prohibition results from suckling except for what penetrates the intestines while on the breast before weaning.”
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
In-book reference: 12:7