Brahma Purana 245.39

Brahmapurāṇa 245.39

agādham etad ajarāmaraṃ ca
nirāmayaṃ vītabhayaṃ śivaṃ ca
samīkṣya mohaṃ paravādasaṃjñam
etasya tattvārtham imaṃ viditvā