Verse 16

विन्ध्याद्रौ पिप्पलो भूत्वा घुणो भूत्वा महावटे ।मन्दरे कुक्कुटो भूत्वा विप्रो जातोऽसि कन्दरे

In plain words

Having been a pippala tree on the Vindhya mountain, a wood-borer in a great banyan, a cock on Mandara -- you were born, a brahmin, in a mountain glen.