ज्योतिषामपि तज्ज्योतिस्तमसः परमुच्यते।ज्ञानं ज्ञेयं ज्ञानगम्यं हृदि सर्वस्य विष्ठितम्
jyotiṣhām api taj jyotis tamasaḥ param uchyate jñānaṁ jñeyaṁ jñāna-gamyaṁ hṛidi sarvasya viṣhṭhitam
It is the light of lights, beyond the reach of darkness; the wisdom, the only thing worth knowing or that wisdom can teach; the presence in the hearts of all.
Translated by Shri Purohit Swami
That Light of all lights is said to be beyond darkness: knowledge, the knowable, and the goal of knowledge, seated in the hearts of all.
Translated by Swami Sivananda
Word meanings (from the gita/gita dataset)
jyotiṣhām—in all luminarie; api—and; tat—that; jyotiḥ—the source of light; tamasaḥ—the darkness; param—beyond; uchyate—is said (to be); jñānam—knowledge; jñeyam—the object of knowledge; jñāna-gamyam—the goal of knowledge; hṛidi—within the heart; sarvasya—of all living beings; viṣhṭhitam—dwells