From the mistakes which parents fall into when uttering wrong words in front of their children, is that they censure the children when they utter them [too]!
As a father, it is not your job to remove the thorns from the path of your child – out of fear they may scratch.
Some children give their parents gifts, and this is nice, and being good to them, and [a show of] affection [to them] – may Allaah reward them with good.
I have parents who are both of old age; my father is 75 years old, and my mother is 70. If I were to perform ‘umrah [ each on their behalf] and gifted its reward to them – while they are still alive – will they be rewarded for it?