Verse 20

अनेनैताः स्फुरन्तीह विचित्रेन्द्रियवृत्तयः ।तेजसान्तःप्रकाशेन यथाग्निकणपङ्क्तयः

In plain words

By this these manifold activities of the senses flash forth here, through an inward radiance of light -- as rows of fire-sparks shine by the brilliance within the fire.