jyotiṣām api taj jyotis
tamasaḥ param ucyate
jñānaṁ jñeyaṁ jñāna-gamyaṁ
hṛdi sarvasya viṣṭhitam
jyotiṣām — in all luminous objects; api — also; tat — that; jyotiḥ — the source of light; tamasaḥ — the darkness; param — beyond; ucyate — is said; jñānam — knowledge; jñeyam — to be known; jñāna-gamyam — to be approached by knowledge; hṛdi — in the heart; sarvasya — of everyone; viṣṭhitam — situated.
He is the source of light in all luminous objects. He is beyond the darkness of matter and is unmanifested. He is knowledge, He is the object of knowledge, and He is the goal of knowledge. He is situated in everyone’s heart.
. . .
ज्योतिषामपि तज्ज्योतिस्तमस: परमुच्यते ।
ज्ञानं ज्ञेयं ज्ञानगम्यं हृदि सर्वस्य विष्ठितम् ॥ १८ ॥