There is an example in the text. Once there was a king who killed an arhat. The next day, a downpour of innumerable jewels fell on his territory. The rain of jewels, becoming more precious by the day, continued for the next six days. On the eighth day, however, a ferocious pouring of mud came down and buried all his subjects. Why did the king have jewels rained down on his land after killing an arhat? It was due to the great deeds he had committed in the past lives. Even though killing an arhat was an extremely grave crime, virtuous karma from the past ripened first and hence his great fortune. But when good karma was depleted, the negative karmic results ensued immediately. Did the Creator arrange the sequence of events as non-Buddhists would like to think? No. The mechanism is the same as that of crops, whose harvest depends on the right combinations of soil, climate, sunlight and other factors. It is not man-made but the law of nature.
~Depicted from THE RIGHT VIEW - On Cause and Effect