مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3185
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 from Madinah fasting during the month of Ramadan, and when he came to Qudaid he broke his fast, and continued not to fast until he entered Makkah.
Musnad Ahmad 3209Its isnad is saheeh]