Verse 25

काठिन्यमवनावेवमौष्ण्यमेव हुताशने ।शैत्यमेष निशानाथे सत्ता चैष जगद्गणे

In plain words

So too it is hardness in the earth, and heat itself in fire; it is coolness in the lord of night, and it is being itself in the whole company of the world.