Without doubt, there is no doubt, that the mind is hard to rein in and unsteady, O mighty-armed one. Yet by practice, and by dispassion, it is held. Practice is the repeated turning of the mind, on some chosen ground of the mind, to one and the same idea; dispassion is the thirstlessness that arises from the repeated seeing of fault in enjoyments wished-for, whether seen or unseen, and by that dispassion the wandering, distracting movement of the mind is held. So that mind is grasped, that is, reined in and checked. But as for him whose self is unrestrained, by him.
Contemporary English rendering of the Sanskrit bhāṣya, pending scholar review.