Hadith 9:113
Asma‘ said My mother came to me seeking some act of kindness from me during the treaty of the Quraish (at Hudaibiyyah). While she hated Islam and she was a polytheist. I said Messenger of Allah (ﷺ), my mother has come to me while she hates Islam and she is a disbeliever. May I do an act of kindness to her? He replied Yes, do an act of kindness to her.
حَدَّثَنَا أَحْمَدُ بْنُ أَبِي شُعَيْبٍ الْحَرَّانِيُّ، حَدَّثَنَا عِيسَى بْنُ يُونُسَ، حَدَّثَنَا هِشَامُ بْنُ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ أَسْمَاءَ، قَالَتْ قَدِمَتْ عَلَىَّ أُمِّي رَاغِبَةً فِي عَهْدِ قُرَيْشٍ وَهِيَ رَاغِمَةٌ مُشْرِكَةٌ فَقُلْتُ يَا رَسُولَ اللَّهِ إِنَّ أُمِّي قَدِمَتْ عَلَىَّ وَهِيَ رَاغِمَةٌ مُشْرِكَةٌ أَفَأَصِلُهَا قَالَ " نَعَمْ فَصِلِي أُمَّكِ "
Original Reference: Sunan Abi Dawud 1668