इमं लोकं मातृभक्त्या पितृभक्त्या तु मध्यमम् । गुरुशुश्रूषया त्वेवं ब्रह्मलोकं समश्नुते ॥ २३३ ॥
By honouring his mother he gains this (nether) world, by honouring his father the middle sphere, but by obedience to his teacher the world of Brahman.
english translation