Al-Mu'jam al-Saghir

Bahz bin Hakim, from his father, from his grandfather, says: I said, "O Messenger of Allah! To whom should I do good?" He said: "To your mother." I said, "Then to whom?" He (peace be upon him) said: "To your mother." I said, "Then to whom?" He (peace be upon him) said: "To your father." I said, "Then to whom?" He (peace be upon him) said: "To the nearest relative, then the next nearest relative."