Musnad Ahmad 5:787

Muhammad ibn Ubayd and Abu Nu'aym narrated to us, they said: Mis'ar narrated to us, from Sa'd ibn Ibrahim, from Ibn Shaddad, who said: I heard Ali, may Allah be pleased with him, saying: "I never heard the Messenger of Allah, may Allah bless him and grant him peace, combine his father and mother for anyone except for Sa'd." Abu Nu'aym said: "His parents for anyone."