مُسْنَدُ أَحْمَدَ
Musnad Ahmad 1950
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn "Abbas that the Prophet (ﷺ) drank some milk and rinsed his mouth after that, and he said: "It is somewhat greasy.”
Musnad Ahmad 1951Sahih (Darussalam) [, al-Bukhari (211) and Muslim (358)]