Zen Master Ryokan of Japan lived in a small hut at the bottom of a hill. He led a simple life. One night, a thief entered his hut but found nothing worth stealing.
Upon Ryokan's return, he bumped right into the thief.
Ryokan said, "You might have come a long way, but I really donot have anything of value here. Yet, I cannot allow you to go back empty-handed. The only thing I have that is of value here is the shirt on my back. I will give it to you as a gift."
The thief took the shirt and left.
The half-naked Ryokan sat down and whispered to himself, "I wish that I could give him this beautiful moon!"
(Source: Hsing Yun's Ch'an Talk, Book 2)