大毘盧遮那成佛經疏 2.60

2.60

The thirty-first: "What is the rat mind? It is thinking of cutting through all bindings." Just as a rat, upon seeing others' boxes, cases, cords, ropes, and the like, is habitually fond of damaging them without reason, and does not think: "By cutting through this, I will obtain such-and-such benefit," but simply does so pointlessly; this mind is also like this: it is fond of finding cracks to ruin and spoil whatever belongs to others and whatever has been accomplished.