Ashtangasamgraha 42.57

42.57

kākadakṣaśikhicchāgagavyamāhiṣakaukkuṭam |

bilvapramāṇaṃ māṃsāsnamūrdhvadaṣṭasya pādayoḥ |

viṣaṃ saṅkramate tatra nihanyācchīghramanyathā ||

one should apply meat and blood measuring a bilva fruit, of a crow, cock, peacock, goat, cow, buffalo, or fowl;
[or] on the feet of one bitten above.
The poison transfers thither; otherwise it would quickly kill him.