Ashtangasamgraha 13.25

13.25

pṛthūnnatagrathitatāviśeṣaiśca tridhā viduḥ |

sāmānyahetuḥ śophānāṃ doṣajānāṃ viśeṣataḥ ||

iti rājānamāpṛcchya śastraṃ sādhvavacārayet ||

sādhayedauṣadhaiḥ ṣaṭkaṃ śeṣaṃ śastreṇa saptakam ||

And they consider it threefold according to differences of broad, elevated, and knotted [forms]. / The general cause of swellings, particularly those born of the doṣas: // Having thus asked permission from the king, one should properly apply the scalpel. // One should treat six [diseases] with medicaments, and the remaining seven with the knife.