Hadith of Imam Al-Hassan ... Tuhaf Al-Uquool, Page 276

"Allah has made the month of Ramadhan the racetrack of His creatures so that they will compete with each other in acts of obedience to Him to attain His satisfaction. Some people preceded others and could win, while others dropped behind and failed. How strange that who plays and laughs on the day [EID] when the good-doers are rewarded and the wrong-doers are losing is! By Allah I take the oath, if the cover is removed, they will realize that the good-doers are engaged in their advantages and the evildoers are engaged in their sins."