An old man is about to die.

While he is laying in his bed waiting to die, he said to his sons ( a rich musician, a rich doctor and a lawyer ) : When i die i want you to put in my coffin 5K $ each for my after life.

One week later the old man dies.

At his funeral the musician came and put 5k $ in his dads coffin while he's crying. The doctor did the same thing , he left 5k $ and left crying. Finally, the lawyer took the 10k $ and left a check with 15k$ and said : thank you dad.