Muhammad bin al-Hanafiyyah quoted Ali as saying: I said: Messenger of Allah! tell me if a son is born to me after your death, may I give him your name and your kunyah? He replied: Yes. The transmitter Abu Bakr did not mention the words "I said". Instead, he said: Ali said to the Prophet ﷺ.
Narrated Aishah, Ummul Muminin: 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 Abul Qasim 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?
Hadith Referenceسنن ابي داود / كتاب الأدب / 4968
Hadith Gradingالألبانی:ضعيف | زبیر علی زئی:ضعيف, إسناده ضعيف, محمد بن عمران الحجبي مستور (تق: 6199), انوار الصحيفه، صفحه نمبر 173
Hadith Takhrij« تفرد بہ أبو داود، (تحفة الأشراف: 17856)، وقد أخرجہ: مسند احمد (6/135، 209) (ضعیف) »