The Compendium of Kāśyapa 8.4.7

8.4.7

sa hyāharaṇasāmānyāddṛṣṭaṃ ekavidho budhaiḥ
dvividho vīryabhedena trividho doṣabhedataḥ

By similarity of intake, it is seen as single by the wise; / twofold by distinction of potency; threefold by distinction of humours;