Jami` at-Tirmidhi 774
جامع الترمذي#774SahihRafi bin Khadi narrated that:The Prophet said: "The cupper and the one cupped have broke the fast
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 ZaiIsnaad Sahih
In-book reference: 8:93