1449 - Abu 'Abd Allah narrated to us, he said: Yazid ibn Harun narrated to us, he said: Muhammad—meaning Ibn Ishaq—narrated to us, from 'Amr ibn Shu'ayb, from his father, from his grandfather, that the Messenger of Allah (may Allah bless him and grant him peace) said: "He is not of us who does not recognize the right of our elder and show mercy to our younger."