Ashtangasamgraha 14.46

14.46

tilapramāṇasaṃsthānavarṇāḥ keśāmbarāśrayāḥ |

bahupādāśca sūkṣmāśca yūkā likṣāśca nāmataḥ ||

saptarātrādvraṇe rūḍhe kṛṣṇabhāṃge same sthite ||

They have the size, shape, and color of sesame seeds, dwell in the hair and clothing,
have many feet, and are tiny; by name they are lice (yūkā) and nits (likṣā).
After seven nights, when the ulcer is healed, and the black portion remains even,