مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2059
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated that Ibn 'Abbas said: The Messenger of Allah (ﷺ) commanded us to do wudoo’ properly.
Musnad Ahmad 2060Its isnad is saheeh]