Ashtangasamgraha 34.24

34.24

vṛddhipatraṃ kṣurākāraṃ tattūnnate gambhīre vā śvayathāvṛjusūcyagramiṣṭam |

viparīte tu pṛṣṭhato 'vanatadhāram ||

savarṇān kaṭhinān snigdhān vārtākāmalakākṛtīn ||

The vṛddhipatra has the shape of a razor; in an elevated or deep swelling, one with a straight, needle-like tip is preferred;

but in the opposite case, one with an edge curved downward toward the back [is preferred].

[Swelling that is] of the same color [as the skin], hard, glossy, and shaped like an eggplant or myrobalan—