Sunan an Nasai
2287
Sahih Lighairihi+2

It was narrated from Ibn 'Abbas that:the Prophet went out in Ramadan and fasted until he came to Qudaid, then a cup of milk was brought to him and he drank and broke his fast; he and his Companions

Sahih LighairihiAbu Ghuddah
SahihAl-Albani