The sixth book of Menu is filled with instructions to those who are engaged in 'tapasa:' it is entitled, "On Devotion." "When the father of a family perceives his muscles become flaccid, and his hair gray, and sees the child of his child, let him then seek refuge in a forest.

Abandoning all food eaten in towns, and all his household utensils, let him repair to the lonely wood, committing the care of his wife to her sons, or accompanied by her, if she choose to attend him.

Let him take up his consecrated fire, and all his domestic implements of making oblations to it, and departing from the town to the forest, let him dwell in it with complete power over his organs of sense and of action.

With many sorts of pure food, such as holy sages used to eat, with green herbs, roots, and fruit, let him perform the five great sacraments before mentioned, introducing them with due ceremonies.

Let him wear a black antelope's hide, or a vesture of bark; let him suffer the hairs of his head, his beard, and his nails, to grow continually." MENU, vi.2.