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 - notca - andeka - onecitta - psyche; heart as the seat of feelings and sensationstantra - depending on, frameworkcet - if sovastu - substancetat - thattadā - thenkiṃ - howapramāṇaka - not perceivablesyãt - could be