Musnad Ahmad 1153:203

Abu Mu'awiyah narrated to us, Al-A'mash narrated to us, from 'Umarah, from Abu 'Atiyyah, who said: I and Masruq entered upon 'Aishah and we said to her: "O Mother of the Believers, two men from the companions of Muhammad, may Allah bless him and grant him peace; one of them hastens the breaking of the fast and hastens the prayer, while the other delays the breaking of the fast and delays the prayer." She said: "Which of them hastens the breaking of the fast and hastens the prayer?" We said: "Abdullah ibn Mas'ud." She said: "That is how the Messenger of Allah, may Allah bless him and grant him peace, used to do." And the other was Abu Musa.