Musnad Ahmad 32:1811

Abu Nu'aym narrated to us, Yunus narrated to us, he said: Burayd ibn Abi Maryam narrated to me, he said: Anas said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "No Muslim man has ever asked for Paradise three times, except that Paradise said: 'O Allah, admit him into Paradise.' And he has not sought refuge from the Fire, except that the Fire said: 'O Allah, grant him refuge.'"