Shivapurana 2.5.45.13

Śivapurāṇa (complete text) 2.5.45.13

utpādya divyaṃ paramādbhutaṃ tu punarvaraṃ ghorataraṃ ca gatvā |
tasmād vrataṃ ghorataraṃ carāmi sunirbhayā sundari vai viśokā ||