"Whoever eats or drinks forgetfully, then he has not broken (the fast), for it was only a provision that Allah provided for him."
Jami` at-Tirmidhi Book 8, Hadith 40
← Previous Hadith 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."

Jami` at-Tirmidhi Book 8, Hadith 39 Next Hadith → (Another chain) with the same or similar (Hadith as no. 721).

Jami` at-Tirmidhi Book 8, Hadith 41