مُسْنَدُ أَحْمَدَ
Musnad Ahmad 1963
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated that Ibn "Abbas said: The Messenger of Allah (ﷺ) heard a man say, Whatever Allah wills and you will. He said: "Rather, what Allah alone wills."
Musnad Ahmad 1964Sahih because of corroborating evidences]