Muhammad ibn al-Muthanna and Muhammad ibn Bashshar narrated to us, both saying: Muhammad ibn Ja'far narrated to us, Shu'bah narrated to us, I heard Qatadah, from Salim, from Jabir ibn 'Abdullah, that a man from the Ansar had a boy born to him, and he wanted to name him Muhammad. He came to the Prophet, peace and blessings be upon him, and asked him about it. He said: "The Ansar have done well. Name by my name, but do not use my kunyah."