Mbh 12.327.5a

"'"Janaka said, 'Without the aid of an understanding cleansed by study of the scriptures and without that true conception of all things which is known by the name of Vijnana, the attainment of Emancipation is impossible. That cleansed understanding, again, it is said, is unattainable without one's connection with a preceptor. The preceptor is the helmsman, and knowledge is the boat (aided by whom and which one succeeds in crossing the ocean of the world). After having acquired that boat, one becomes crowned with success. Indeed, having crossed the ocean, one may abandon both. For preventing the destruction of all the worlds and for preventing the destruction of acts (upon which the world depend), the duties appertaining to the four modes of life were practised by the wise of old. By abandoning acts, good and bad, agreeably to this order of acts one succeeds, in course of many births, in attaining to Emancipation.[1739] That man who, through penances performed in course of many births, succeeds in obtaining a cleansed mind and understanding and soul, certainly becomes able to attain to Emancipation (in a new birth) in even the very first mode viz., Brahmacharyya.[1740] When, having attained to a cleansed understanding, Emancipation becomes his and in consequence thereof he becomes possessed of knowledge in respect of all visible things, what desirable object is there to attain by observing the three other modes of life?[1741] One should always cast off faults born of the attributes of Rajas and Tamas. Adhering to the path of Sattwa, one should know Self by Self.[1742] Beholding one's self in all creatures and all creatures in one's self, one should live (without being attached to anything) like aquatic animals living in water without being drenched by that element.