以百年方浮出水面一次的盲龟偶遇独孔浮木、颈穿其中的机率，比喻堕入恶趣的愚人再得人身之难得的一部经。

A discourse teaching that it is more likely for a blind turtle, surfacing only once every hundred years, to put its neck through the single hole of a floating yoke than for a fool who has fallen into the lower realms to be reborn as a human being.