In Islam, serving one’s parents is a duty second to prayer, and it is their right to expect it. It is considered despicable to express any irritation when, through no fault of their own, the old become difficult.
God has said:
Lord has commanded that you worship none but Him, and that you be kind to your
parents. If one of them or both of them reach old age with you, do not say
to them a word of disrespect, or scold them, but say a generous word to
them. And act humbly to them in mercy, and say, “My Lord, have mercy on
them, since they cared for me when I was small.”
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