Note 141 — Chapter VII · THE ŚAIVA-DARŚANA.
Edward B. (Edward Byles) Cowell translation
This "instrument" (karaṇa) seems to mean what Hoisington calls purushan or "the principle of life which establishes or supports the whole system in its operation;" he makes it one of the seven vidyátattvas. According to Mádhava, it should be what he calls guṇa.