8
He who digs a pit may fall into it,
and he who breaches a wall may be bitten by a snake.
9
The one who quarries stones may be injured by them,
and he who splits logs endangers himself.
10
If the axe is dull and the blade unsharpened,
more strength must be exerted,
but skill produces success.
11
If the snake bites before it is charmed,
there is no profit for the charmer.