saaMkhya-suutra I 145: Since light does not pertain to the unintelligent, light, [which must pertain to something or other, is the essence of the Soul, which, self- manifesting, manifests whatever else is manifest].
jaDaprakaashaayogaatprakaashaH (jaDa-prakaasha+ayogaat prakaashaH) Perhaps: >From (=because of?) unintelligent(jaDa)- light(prakaasha)- disjunction (ayogaat), light (prakaashaH).