مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3186
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn ‘Abbas (رضي الله عنه) that They debated whether the Prophet (ﷺ) was fasting on the day of 'Arafah. Ummul-Fadl sent some milk to the Prophet (ﷺ) and he drank (it).
Musnad Ahmad 3210Its isnad is hasan]