Nityanathatantra 19.75

Nityanāthatantra 19.75

atha śaṃkaramataṃ loham
praṇamyaśaṃkaraṃrudraṃdaṇḍapāṇiṃmaheśvaram
jitarogaṃma vyasyanāradaḥpṛcchategurum