自分の用を足そうとしてトイレに行く人は、自分が存在するためにすべきことをする人であり、掃除をしてくれるために行く人は、自分が喜んで行なったので、功績を立てた人だ。
A person who goes to the restroom to do their own business is someone who does what they have to do in order to sustain their own life. A person who goes to?the restroom to clean for others has done it because they like it; therefore, they are someone who has built merits.
photo: 「Cleaning the toilet is fun to do」by Kate from flickr