Language:
كتاب الأدب
78  
Good Manners and Form (Al-Adab)
(8)
Chapter: Kindness by a lady who has a husband, to her mother
(8)
باب صِلَةِ الْمَرْأَةِ أُمَّهَا وَلَهَا زَوْجٌ
Sahih al-Bukhari 5980

Narrated Abu Sufyan:

That Heraclius sent for him and said, "What did he, i.e. the Prophet (ﷺ) order you?" I replied, "He orders us to offer prayers; to give alms; to be chaste; and to keep good relations with our relatives.

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 صلى الله عليه وسلم يَأْمُرُنَا بِالصَّلاَةِ وَالصَّدَقَةِ وَالْعَفَافِ وَالصِّلَةِ‏.‏
Reference : Sahih al-Bukhari 5980
In-book reference : Book 78, Hadith 11
USC-MSA web (English) reference : Vol. 8, Book 73, Hadith 10
  (deprecated numbering scheme)