The great scholar, Shaikh Ṣāliḥ Al-Fawzān, may Allāh protect him was asked:
My mother lives on her own and feels very lonely and isolated, and I fear for her. She keeps pressing me to move her over to my house so that she can live with me, so that I can take care of her and she not feel lonely any more, being in my company. My wife, meanwhile, is determined in her refusal to have my mother with her in the house. So should I listen to my wife or my mother?
The shaikh, may Allāh protect him, replied:
If this wife doesn’t get along with your mother, have her live on her own and have your mother live with you, or look for another wife who will help you in being good and fulfilling your duties to your mother.
As for you neglecting and losing your mother and going with your wife and listening to [her instead], this is something that’s not allowed. This is from [the major sin of] mistreating [one’s parents].
Majmūʿah Rasāʾil Daʿawiyyah wa Manhajiyyah, first edition, p. 529.