तेन सार्धं कथा यत्तत्कौलेयाह्वानमम्बरे ।अज्ञानमापदां निष्ठा का हि नापदजानतः
In plain words
Whatever converse one holds with him is calling to a dog in the empty sky. ajñāna is the culmination of calamities — for what calamity is there not for one who does not know?