Verse 34

दीपहस्तो यथाभ्येति तमोरूपदिदृक्षया ।तथा विलीयते सर्वं तमस्तापैर्घृतं यथा

In plain words

As one comes near, lamp in hand, wishing to see the form of darkness, so all darkness melts away, as ghee does in heat.