Verse 4

अयं सोऽहमिदं कार्यमिदं नेति ददर्श ह ।निशाव्यपगमे लोको यथा क्षीणे तमःपटे

In plain words

'This is I, this one; this is to be done, this is not' — thus he came to see once more, as the world sees again when night departs, when the veil of darkness has thinned away.