مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3436
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated that Ibn ‘Abbas (رضي الله عنه) said: The Messenger of Allah (ﷺ) set out for Makkah during the year of the conquest in the month of Ramadan, and he continued to fast until he reached al-Kadeed, then he broke his fast.
Musnad Ahmad 3460lts isnad is saheeh, al-Bukhari (1944) and Muslim (1113)]