Seduka knew that Vrishadarbha had from his boyhood a mental vow, namely that he would never give no other metal to a Brahmana except gold and silver.
सेदुको वृषदर्भस्य बालस्यैव उपांशुव्रतमभ्यजानात् कुप्यमदेयं ब्राह्मणस्य॥