The famished monk won't throw stone at the tree. Not because he can't but because he's willing to let the wind and time combine to do what they are supposed to. On the other end, the benevolent old tree can take a few blow. It's used to the abuse by now. However, the enlightened soul has to set an example although there's no one to document his deed. After waiting patiently in the shadow, a fruit falls down and he partially fills his stomach. Even if it took a long while, he's not furious at nature as hunger and anger aren't good for each other. Something he knows very well and something the tree loves to test.