مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2866
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated that Abu Ghafatan said: I entered upon Ibn "Abbas (رضي الله عنه) and found him doing wudoo’. He rinsed his mouth and nose, then he said: The Messenger of Allah(ﷺ) said: “Twice - or twice thoroughly - or three times."
Musnad Ahmad 2887Its isnad is qawi]