In addition, for example, dreaming of water, if the water is clear and big, so much the better, or dreaming that you are in the water, so much the better. These are all signs of eliminating karma. Others, for example, dreamed that they escaped from prison, crossed the river and climbed to the top of the mountain, or that they won a fight with a black man, or that they worshipped Buddha, and dreamed that they went to the temple to see incense.
You should be like dreaming about water. See for yourself. However, if you want to be truly clean, you must really do it well and really follow the path of Bodhisattva.