Sahih al-Bukhari 5978

قَالَتْ أَتَتْنِي أُمِّي رَاغِبَةً فِي عَهْدِ النَّبِيِّ صلى الله عليه وسلم فَسَأَلْتُ النَّبِيَّ صلى الله عليه وسلم آصِلُهَا قَالَ ‏"‏ نَعَمْ ‏"‏‏.‏ قَالَ ابْنُ عُيَيْنَةَ فَأَنْزَلَ اللَّهُ تَعَالَى فِيهَا ‏{‏لاَ يَنْهَاكُمُ اللَّهُ عَنِ الَّذِينَ لَمْ يُقَاتِلُوكُمْ فِي الدِّينِ‏}

“My mother came to me, hoping (for my favor) during the lifetime of the Prophet. I asked the Prophet, "May I treat her kindly?" He replied, "Yes." Ibn 'Uyaina said, "Then Allah revealed: 'Allah forbids you not with regards to those who fought not against you because of religion, and drove you not out from your homes, that you should show them kindness and deal justly with them”