Jami` at-Tirmidhi 719
جامع الترمذي#719Da'ifAbu Sa'eed Al-Khudri narrated that:the Messenger of Allah said: "Three things do not break the fast of the fasting person: Cupping, vomiting, and the wet dream
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirDaif
Al-AlbaniDaif
Bashar Awad MaaroufDaif
Zubair Ali ZaiDaif
In-book reference: 8:38