Yoga Sūtra Chapter Four verse 16

न चैकचित्ततन्त्रं चेद्वस्तु तदप्रमाणकं तदा किं स्यात् ॥१६॥

na ca-eka-citta-tantraṃ cet-vastu tat-apramāṇakaṃ tadā kiṃ syãt ||16||

And substance not dependent on one psyche,
if so then how could this be when not perceivable?

na - no; not; nor, neitherca - andeka - onecitta - psyche (the totality of the human mind, conscious and unconscious); mind; hearttantra - depending on, frameworkcet - if sovastu - any really existing or abiding substance or essence, thing, objecttat - that, thistadā - thenkiṃ - howapramāṇaka - not perceivablesyãt - could be