Bear and sleeping man

"A kind man, seeing a serpent overcoming a bear, went to the bear's assistance, and delivered him from the serpent. The bear was so sensible of the kindness the man had done him that he followed him about wherever he went, and became his faithful slave, guarding him from everything that might annoy him. One day the man was lying asleep, and the bear, according to his custom, was sitting by him and driving off the flies. The flies became so persistent in their annoyances that the bear lost patience, and seizing the largest stone he could find, dashed it at them in order to crush them utterly; but unfortunately the flies escaped, and the stone lighted upon the sleeper's face and crushed it." http://www.sacred-texts.com/isl/masnavi/msn02.htm story 8