مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3194
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn 'Abbas (رضي الله عنه) that As-Sa'b bin Jaththamah gave the Messenger of Allah (ﷺ) the rump of a donkey, dripping with blood, when he was in ihrum, and he refused it.
Musnad Ahmad 3218Its isnad is saheeh, Muslim (1194)]