(3) The thought thus must be kept ever under watch; I must always be as if without carnal sense, like a thing of wood. The eyes must never glance around without object; their gaze should always be downward, as if in meditation. But sometimes, to rest his gaze, one may look around him; he sees [strangers] as mere phantoms, but will turn his eyes upon them to bid them welcome. On the road, and other such places, he will look from time to time to the four quarters of space, to take note of danger; he will rest and turn round to look about him. He will go forward or backward with heed, and in all conditions do what he has to do with understanding. In every act that he undertakes he will consider the due posture of his body, and from time to time will look to see how it is. He will watch with great heed the wild elephant of his thought, so that it remain bound to the stout stake of holy meditation and become not loosed. He will watch to see where his mind is moving, so that it may not even for an instant cast off the yoke of rapt devotion....

(29) The instructions for preventing the being from entering are thus: O nobly-born, (so-and-so by name,) whosoever may have been thy tutelary deity, tranquilly meditate upon him-as upon the reflection of the moon in water, apparent yet non-existent [as a moon], like a magically-produced illusion. If thou hast no special tutelary, meditate either upon the Compassionate Lord or upon me; and, with this in mind, meditate tranquilly.