《太平广记·卷二百二十七·伎巧三》
挖掘时，一定有虎在你的前后吼叫跳跃，不要怕，那是死虎的鬼魂。
欲掘时，必有虎来吼掷前后，不足畏，此虎之鬼也。
When digging, there will certainly be a tiger screaming and roaring around you. Don't be afraid, for that is the ghost of the dead tiger.