सुरुङ्गायुक्ते वा कूपे नागमनियतशिरस्कं हिरण्योपहारेण दर्शयेत् ॥ कZ_०५.२.४२ ॥
suruṅgāyukte vā kūpe nāgam aniyataśiraskaṃ hiraṇyopahāreṇa darśayet ।
或者,在一口装有暗道的井中,他应展示一条“那伽”,其头部不时、难以预料地出现,并与献上黄金相联系。
A tunnel-linked well allows an agent/animal/effigy to appear and disappear, simulating a nāga’s unpredictable emergence.
The appearance is conditioned on ‘hiraṇya-upahāra’—the act of offering gold.