مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2182
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Muhammad bin Sireen that Ibn 'Abbas (رضي الله عنه) told him: The Messenger of Allah (ﷺ) took a piece of shoulder bone and nibbled the meat from it, then he got up and prayed and did not do wudoo’.
Musnad Ahmad 2188A saheeh hadeeth]