bintalkhaleej:

Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said, “Verily, Allah Almighty will raise the status of his righteous servants in Paradise and they will say: O Lord, what is this? Allah will say: This is due to your child seeking forgiveness for you.”

Musnad Aḥmad 10232

Each time you make a prayer for yourself, spare one for your parents. They are in as much need of Allah’s mercy and forgiveness as you. You can never repay them for all they’ve done for you, but in the hereafter you could be a source of their happiness and comfort.