مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2639
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated that Ibn 'Abbas (رضي الله عنه) said: The Messenger of Allah (ﷺ) came to us with Usamah riding behind him on his mount. We gave him some of this nabeedh to drink - meaning nabeedh in a water skin - and he drank from it, and said: “You did well; this is how it should be done.”
Musnad Ahmad 2655A saheeh hadeeth; this is a da'eef isnad]