Jami` at-Tirmidhi 720
جامع الترمذي#720Da'ifAbu Hurairah narrated that :the Prophet said: "Whoever is overcome by vomiting, then he is not required to make up (the fast), and whoever vomits on purpose, then he must make it up
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 MaaroufDaif
Zubair Ali ZaiDaif
In-book reference: 8:39