[13]. Love for a hurtful parent: Forgive their transgressions. Show mercy. Share the Qur’an with them. Be kind to them. Choose to speak nicely of them. Teach your children to honor and be kind to their grandparents.
[14]. One is not to show any kind of disapproval in their service to their parents even as small a word as "uff" or "ugh", let alone what is beyond that.