As a kindled fire, well kindled and blazing, reduces its fuel, the firewood, to ashes, O Arjuna, so the fire of knowledge, knowledge itself being the fire, reduces all actions to ashes, makes them seedless. The fire of knowledge cannot directly, like firewood, burn actions to ash; the meaning is that the right vision is the cause of all actions becoming seedless. By its force, the action by which the body has been begun, since its fruit has already set in, is exhausted only by being enjoyed; but all actions done before the arising of knowledge and not yet bearing fruit, and those done alongside knowledge, and those done in countless past births, all these the fire of knowledge reduces to ash. Since it is so, therefore.
Contemporary English rendering of the Sanskrit bhāṣya, pending scholar review.