مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2331
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn 'Abbas (رضي الله عنه) that A roasted shoulder [of an animal] was brought to the Prophet (ﷺ) and he nibbled some meat from it, then he prayed and he did not do wudoo’ after eating that.
Musnad Ahmad 2339Saheeh; this is a da'eef isnad, Muhammad bin az-Zubair is da