Asma' bint Abu Bakr As-Siddiq (May Allah be pleased with her) said:
My mother came to me while she was still a polytheist, so I asked Messenger of Allah ﷺ, "My mother, who is ill-disposed to Islam, has come to visit me. Shall I maintain relations with her?" He ﷺ replied, "Yes, maintain relations with your mother".

[Al-Bukhari and Muslim].

وعن أسماء بنت أبي بكر الصديق رضي الله عنهما قالت: قدمت على أمي وهي مشركة في عهد رسول الله ﷺ، فاستفتيت رسول الله ﷺ قلت: قدمت علي أمي وهي راغبة، أفأصل أمي؟ قال:
"نعم صلي أمك" ((متفق عليه)).