Is Giving Sadqa-e-Jariya On Behalf Of Someone Alive Valid
The principle is that everyone is responsible for his or her own deeds. Your intention can’t help them earn a reward of a good deed they did not make. Unless one asks You to do a charity on one’s behalf, one doesn’t get reward. However if one has taught You a good thing like parents and you do that good thing they earn the reward because they initiated it.