(76) باب فِي الرُّخْصَةِ فِي الْجَمْعِ بَيْنَهُمَا
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?
Reference: Sunan Abi Dawud 4968
In-book reference: Book 43, Hadith 196
English translation: Book 42, Hadith 4950