Narrated Aisha, Ummul Mu'minin: A woman came to the Messenger of Allah (ﷺ) and said: Messenger of Allah! I have given birth to a boy, and call him Muhammad and AbulQasim as kunyah (surname), but I have been told that you disapproved of that. He replied: What is it which has made my name lawful and my kunyah unlawful, or what is it which has made my kunyah unlawful and my name lawful?

English translation · Sunan Abu Dawud