Something You can not learn

How Melarapa learn, He need to pay gold for his lesson, not only that, 6 years of torture, i don't think you can take it. You don't want to take it because of your ego. For life after life, this time, you don't want to learn , you will never learn. You lose the chance in this life. Naropa stoned anyone who close to his place. How can Marpa get the chance to learn from Naropa?