तेषु प्रवेशाद्विश्वेशः शिपिविष्ट इहोच्यते ।सर्वेषां प्रकाशनशीलत्वात् प्रकाशनः ॥
In plain words
Because He enters into those rays, the Lord of the universe is here called Śipiviṣṭa. And because lighting everything up is simply His nature, He is Prakāśana — the one who makes it all visible.
Close to the Sanskrit
Because of entering into those, the Lord of the universe is here called Śipiviṣṭa. Because of having the illumining of all as His nature, He is Prakāśana.