Note 18 — Chapter II · PURUSHA
Reading edition
Purusha is a substance (dravya) because it has independent existence (anāśrita) and has a measure (vibhu parimāṇa) of its own. So it always possesses the common characteristics (sāmānya guṇa) of substances, contact (saṃyoga), separation (viyoga) and number (saṃkhyā). Purusha cannot be considered to be suffering change or impure on account of the possession of the above common characteristics of all substances. Yoga-vārttika, II. 17.