Judges 15:3-5
3Samson then said to them, “This time I shall be blameless in regard to the Philistines when I do them harm.”4Samson went and caught three hundred foxes, and took torches, and turned the foxes tail to tail and put one torch in the middle between two tails.
5When he had set fire to the torches, he released the foxes into the standing grain of the Philistines, thus burning up both the shocks and the standing grain, along with the vineyards and groves.