Yoga Sutra 4.13 they consist of the gunas
Sūtra IV.13 They are manifest or subtle, and consist of the guṇa-s These three time-phases are present when of manifest nature. Past and future are essentially subtle, being the six Unparticularized. All this is, from the highest point of view, simply to be distinguished as a conglomerate of the guṇa-s, and so it says in…