Garudapurana 1.177.62

1.177.62

karpūragavyasarpirbhyāṃ prahāraḥ pūrito hara /
śastrodbhavaḥ sabaddhaśca śuklavarṇena śaṅkara ! /
pākaṃ ca vedanāṃ caiva saṃspṛśedvṛṣabhadhvaja //

A blow filled with camphor and cow's ghee, O Hara, / caused by a weapon, and bound with a white cloth, O Śaṅkara, / does not succumb to suppuration or pain, O Bull-bannered One.