Asma bint Abi Bakr (may Allah be pleased with her) narrates: My mother came to me while she was a polytheist. This was at the time when the treaty (of Hudaybiyyah) was made with the Quraysh. I said: O Messenger of Allah! Indeed, my mother has come to me and she desires good treatment from me, so should I maintain ties of kinship with her? The Prophet (peace and blessings of Allah be upon him) said: "Yes! Maintain ties of kinship with her." Agreed upon.
Hadith Referenceمشكوة المصابيح / كتاب الآداب / 4913
Hadith Gradingالألبانی:مُتَّفَقٌ عَلَيْهِ | زبیر علی زئی:متفق عليه
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «متفق عليه، رواه البخاري (2620) و مسلم (1003/50)»