Musnad Abu Ya'la al-Mawsili 160:154

Suwayd ibn Sa'id narrated to us, 'Abdullah ibn Raja' narrated to us, from 'Ubaydullah ibn 'Umar, from al-Maqburi, from Abu Hurayrah, who said: The Messenger of Allah (peace be upon him) said: "Whoever performs ghusl on the day of Jumu'ah, wears his best clothes, goes early, and arrives early, then listens and remains silent, he will be forgiven for what is between him and the other Jumu'ah." He said: So I narrated this to Abu Bakr 'Amr ibn Hazm, and he said: "And an addition of four days."