Verse 19

अनादिमत्योऽविरतं प्रस्फुरन्ति तरङ्गवत् ।पूर्वात्पूर्वं किलाभूवंस्ततः पूर्वतरं यथा

In plain words

Beginningless, they flash forth without cease, like waves; they were, indeed, earlier than the earlier, and earlier still than that.