Mukhtasar Muslim

Abu Huraira (may Allah be pleased with him) reports that the Messenger of Allah (peace and blessings of Allah be upon him) said: "May his nose be rubbed in dust, may his nose be rubbed in dust, may his nose be rubbed in dust." It was asked, "O Messenger of Allah! Whose?" He said: "The one who finds his parents, both of them or one of them, in old age, and then does not enter Paradise (by serving them)."