مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3328
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn ‘Abbas (رضي الله عنه) that The Prophet (ﷺ) ate a bone with some meat on it, then he went out to pray.
Musnad Ahmad 3352A Saheeh hadeeth; this is a husan isnad]