Musnad Ahmad 28:431

Muhammad ibn Ja‘far narrated to us, Shu‘bah narrated to us, from ‘Ata’ ibn al-Sa’ib, from his father, from ‘Abdullah ibn ‘Amr, who said: A man came to the Prophet, peace and blessings of Allah be upon him, to pledge allegiance to him for migration, and he was harsh toward him. He said: "I did not come to you until I made them both weep"—meaning his parents. He said: "Return, and make them laugh just as you made them weep."