Mbh 12.299.3b

As a dyke built across a river, if not washed away, causes the waters thereof to swell up, even so the man who, without being attached to objects of enjoyments, creates the dyke of righteousness whose materials consist of the limitations set down in the scriptures, has never to languish. On the other hand, his merits and penances increase. As the pure gem (called Suryakanta) absorbs and attracts to itself, the rays of the Sun, even so, O tiger among kings, does Yoga proceed by help of concentrated attention.[1561] As sesame seeds, in consequence of their repeated intermingling with (fragrant) flowers, become in respect of quality very agreeable, even so the quality of Sattwa arises in men in proportion to the measure of their association with persons of cleansed souls.[1562] When one becomes desirous of dwelling in heaven, one casts off one's spouses and wealth and rank and vehicles and diverse kinds of good acts. Indeed, when one attains to such a frame of mind, one's understanding is said to be dissociated from the objects of the senses. That man (on the other hand) who, with understanding attached to the objects of the senses, becomes blind to what is for his real good, is dragged (to his ruin) by his heart which runs after all worldly objects, like a fish (dragged to its ruin) by the bait of meat. Like unto the body that is made up of different limbs and organs, all mortal creatures exist depending upon one another. They are as destitute of vigour as the pith of the banana plant. (Left to themselves) they sink in the world's ocean like a boat (made of weak materials). There is no fixed time for the acquisition of righteousness. Death waits for no man. When man is constantly running towards the jaws of Death, the accomplishment of righteous acts is proper at all times. Like a blind man who, with attention, is capable of moving about his own house, the man of wisdom, with mind set on Yoga, succeeds in proceeding along the track (he should follow).