Neither Indra, nor Yama, nor the king of the Yakshas, nor Varuna, nor Vayu knows it, how could it (then) be known to human beings?
नैतद् वेद महेन्द्रोऽपि न यमो न च यक्षराट्। वरुणोऽप्यथवा वायुः कुतो वेत्स्यन्ति मानवाः॥