Shirdi Sai Baba on Purva Karma

If you care for child or (some other desire) and come to me for that, you are mistaken. You need not come to me for these. These are not in my power. These (that is, birth of child and death of relatives) are dependent on Purva Karma. Even the great god, who has created the world, cannot alter these. Do you think He can tell the sun or the moon: rise some 2 yards farther away from your usual or appointed place? No, He cannot and will not do that. That would produce disorder, chaos.

What you can account for, as the result of your present effort, is the result of present Karma. What you cannot trace, is due to your past Karma. Results accrue differently to two person doing the same acts; that difference may be put down to the difference in their Purva Karma.

Inexplicability of unforeseen and unforeseeable results may disappear in view of purva karma. So do not go on exulting or being dejected; nor should you blame others. Recognize the existence of the Moral Law as governing results. Therefore, unswervingly follow the Moral Law. If you do not get the fruits or results of your actions now, they will come in later births. As for the Vasanas, the Moral Law is inexorable and evident. So, by following and observing the Moral Law, you reach your goal – God, the perfection of the Moral Law.
Shirdi Sai Baba