Vishnupurana 3.9.p2

3.9.p2

"O king, having performed all these duties, when a householder is stricken in years, he must proceed to woods, either with his wife, or leaving her to the charge of his son. He must live there upon leaves, roots and fruits; allow his hair and beard to grow, and braid the former upon his brows and sleep upon the ground. His dress must be made of skin or of Kāsa and Kusā grasses. He must bathe thrice a day, offer oblations to the celestials and to fire and treat all his guests with hospitality. He must beg alms and give food to all creatures. He must annoint himself with such unguents as are found in the forest and while carrying on his devout practices he must endure heat and cold. He, who leading the life of a hermit, follows these rules, destroys like fire all imperfections, and attains to the region of Brahman.