To live a pure unselfish life, one must count nothing as one’s own in the midst of abundance.
It’s not from the Buddha, but from a Japanese book called The Teaching of Buddha. Titles such as this do tend to lead to confusion.
The Teaching of Buddha is the Japanese Buddhist equivalent of the Gideon Bible, except that the Gideon Bible can be taken as, you know, Gospel, while the Japanese book, as far as I’m aware doesn’t contain any Buddhist scriptures. I’m just about to order a copy, so I’ll soon find out. Several other Fake Buddha Quotes come from this book, and I’m curious to take a look at it. So far all I’ve seen is snippets on Google Books.
Here’s an example from Twitter.