I have thus told you a mystery, viz., the manner in which a Shudra may become a Brahmana, or that by which a Brahmana falls away from his own pure position and becomes a Shudra,
एतत् ते गुह्यमाख्यातं यथा शूद्रो भवेद् द्विजः। ब्राह्मणो वा च्युतो धर्माद् यथा शूद्रत्वमाप्नुते॥