question #3 Sahih al-Bukhari 2620, Book 51, Hadith 52 : What is the significance of showing kindness to parents in Islam, regardless of their faith?

My mother came to me during the lifetime of Allah’s Messenger (ﷺ) and she was a pagan. I said to Allah’s
Apostle (seeking his verdict), “My mother has come to me and she desires to receive a reward from
me, shall I keep good relations with her?” The Prophet (ﷺ) said, “Yes, keep good relation with her. ”