مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3221
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated that Ibn 'Abbas said: The Messenger of Allah (ﷺ) went out to relieve himself, then some food was brought to him and he ate and did not touch water.
Musnad Ahmad 3245Its isnad is saheeh, Muslim (374)]