When the girl washed the rice in a tub and emptied it in a colander, a single grain of rice remained in the tub; when the girl soaked it in water, the rice swelled and filled the tub entirely, and kept increasing as the girl washed the rice.
桶で研いだ米をざるにあけると、桶に1粒だけ米が残り、それを水につけると米が桶一杯に膨れ上がり、それをさらに研ぐことで米はどんどん増えていた。