The Compendium of Suśruta 6.24.9

Suśrutasaṃhitā 6.24.9

kaphaḥ kaphakṛte ghrāṇācchuklaḥ śītaḥ sravenmuhuḥ/
śuklāvabhāsaḥ śūnākṣo bhavedguruśiromukhaḥ//