'

A wild boar was standing under the tree, sharpening his teeth on the tree. The fox came over and asked: "There is no danger of hunters or hunting dogs coming, why do you want to sharpen your teeth like this?" The wild boar replied, "I have thought about it carefully. This is what I did. If I only temporarily sharpen my weapon when I need to use it, it will be too late!" 

Meaning-Burn more incense at ordinary times so as not to hold Buddha's feet temporarily