(8) باب صِلَةِ الْمَرْأَةِ أُمَّهَا وَلَهَا زَوْجٌ
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 (ﷺ) saying, "My mother has arrived and she is hoping (for my favor)." The Prophet (ﷺ) said, "Yes, be good to your mother."
Reference: Sahih al-Bukhari 5979
In-book reference: Book 78, Hadith 10
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 73, Hadith 9