A man questioned the Messenger of Allah (peace and blessings of Allah be upon him) and said, “Do you think that if I perform the obligatory prayers, fast in Ramadhan, treat as lawful that which is halal, and treat as forbidden that which is haram, and do not increase upon that [in voluntary good deeds], then I shall enter Paradise?” He (peace and blessings of Allah be upon him) replied, “Yes.”