gold:: bīja with lead
nāgena bījakaraṇamāha ujjvapahemavare svarṇaśreṣṭhe āvartye samyagdrute nāgaṃ śuddhasīsakaṃ āvartyaṃ pradrāvyaṃ kiṃ kṛtvā samaṃ svarṇasamabhāgakṣepaṃ kṣiptvā punarnāgopari triguṇaśipāprativāpaṃ triguṇā yā śipā tasyā nirvāpaṃ kuryāt // GRhtCM_5.50:1 //
śipā manaḥśipā // GRhtCM_5.50:2 //
tatsiddhaṃ ahibījaṃ nāgayogena bījaṃ samuddiṣṭaṃ rasavidbhiḥ iti śeṣaḥ // GRhtCM_5.50:3 //