In traditional portrayals of the six realms of existence, the Buddha in the human realm is shown with a begging bowl. We may associate this with a mentality of poverty, which is the largest concern in the human realm. But by carrying a begging bowl, in fact, it is as though you always have something to put things into. In other words, the ultimate mentality of poverty is also the mentality of richness at the same time. In that way, you are in command of the whole situation. So that is extremely wealthy.
From “The Human Realm,” in Transcending Madness: The Experience of the Six Bardos, page 246.