Two Monks were walking through the countryside and had to cross a river in order to get home. When they reached the river bank they found it was unusually high as the rains had come early. A woman joined them on the river bank, also needing to cross to the other side. She had waded across the river the previous day but now on her return, found the water too deep.
The Monks decided that if they took their time, they could make it across. The elder monk offered to carry the woman and she accepted his kind offer.
After reaching the other side the monks and the woman parted company and they continued on their way. After several hours had passed the younger monk stopped the elder monk and said he was troubled because, as monks, they had both taken vows which meant they weren't allowed to touch women and the elder monk had clearly broken that vow.
The elder monk turned to the younger monk and said "I put her down four hours ago, why are you still carrying her?".