صحيح البخاري Sahih Bukhari كتاب الأدب The Book of Al-Adab (Good Manners)
بَابُ صِلَةِ الْمَرْأَةِ أُمَّهَا وَلَهَا زَوْجٌ:

(8) Chapter. The kindness shown by a lady who has a husband, to her mother.

2 hadith
Hadith 5979
وَقَالَ اللَّيْثُ ، حَدَّثَنِي هِشَامٌ ، عَنْ عُرْوَةَ ، عَنْ أَسْمَاءَ ، قَالتَ : قَدِمَتْ أُمِّي وَهِيَ مُشْرِكَةٌ فِي عَهْدِ قُرَيْشٍ وَمُدَّتِهِمْ إِذْ عَاهَدُوا النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ مَعَ ابْنِهَا ، فَاسْتَفْتَيْتُ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ، فَقُلْتُ : إِنَّ أُمِّي قَدِمَتْ وَهِيَ رَاغِبَةٌ أَفَأَصِلُهَا ؟ قَالَ : " نَعَمْ ، صِلِي أُمَّكِ "
Narrated Asma': "My mother who was a Mushrikah (pagan, etc.), came with her father during the period of peace pact between the Muslims and the Quraish infidels. I went to seek the advice of the Prophet (saws) saying, "My mother has arrived and she is hoping (for my favor)." The Prophet (saws) said, "Yes, be good to your mother."
Hadith Reference Sahih Bukhari / The Book of Al-Adab (Good Manners) / Hadith: 5979
Hadith Grading محدثین: أحاديث صحيح البخاريّ كلّها صحيحة
Hadith 5980
حَدَّثَنَا يَحْيَى ، حَدَّثَنَا اللَّيْثُ ، عَنْ عُقَيْلٍ ، عَنِ ابْنِ شِهَابٍ ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ ، أَنَّ عَبْدَ اللَّهِ بْنَ عَبَّاسٍ ، أَخْبَرَهُ أَنَّ أَبَا سُفْيَانَ أَخْبَرَهُ ، أَنَّ هِرَقْلَ أَرْسَلَ إِلَيْهِ ، فَقَالَ : يَعْنِي النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ " يَأْمُرُنَا بِالصَّلَاةِ وَالصَّدَقَةِ وَالْعَفَافِ وَالصِّلَةِ " .
Narrated Abu Sufyan: That Heraclius sent for him and said, "What did he, i.e. the Prophet order you?" I replied, "He orders us to offer prayers; to give alms; to be chaste; and to keep good relations with our relatives.
Hadith Reference Sahih Bukhari / The Book of Al-Adab (Good Manners) / Hadith: 5980
Hadith Grading محدثین: أحاديث صحيح البخاريّ كلّها صحيحة