Sunan Abu Dawud
2404
Sahih+3

Narrated Ibn 'Abbas:The Prophet (ﷺ) left Medina for Mecca till he reached 'Usfan, He then called for a vessel (of water). It was raised to his mouth to show it to the people, and that was in Ramadan. Ibn 'Abbas used to say: The Prophet (ﷺ) fasted and he broke his fast. He who likes may fast and he who likes may break

SahihAl-Albani
SahihMuhammad Muhyi Al-Din Abdul Hamid