مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3082
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from 'Ali bin ‘Abdullah bin ‘Abbas, from his father, that He saw the Prophet (ﷺ) eat a leg (of meat), then he prayed and did not do wudoo’.
Musnad Ahmad 3108A saheeh hadeeth]