Skandapurana 7.13.p59

7.13.p59

sanatkumāra uvāca
ta evamuktā devena devāssarve tadā harim .
ūcuḥ kuru tapo ghoraṃ tataḥ śreyo hyavāpsyasi . .71 . .
tataḥ sa candraṃ śailendramāruhya susamāhitaḥ .
tapaścacāra sumahadindriyagrāmatāpanam . .72. .
devā api mahātmāna54 ṛṣibhissaha suvrataiḥ .
hiraṇyavarṇaṃ śailendre55 tapastepussamāhitāḥ ..73 ..

Sanatkumāra said:
Having been addressed thus by the God, all the gods then said to Hari:
“Perform severe austerity; from that you will indeed attain the highest good.”
Then he, ascending Candra, king of mountains, deeply concentrated,
performed immense austerity, mortifying the host of senses.
The noble gods also, together with the seers of noble vows,
deeply concentrated, performed austerity on Hiraṇyavarṇa, king of mountains.