Astanga Hrudaya
व्यक्ताव्यक्तं जगदिव नातिक्रामति जातुचित्। तत्रोष्णं भ्रमतृड्ग्लानिस्वेददाहाशुपाकिताः॥१८॥
Because, though substances are of many kinds and qualities, only fire and water (Agni and Soma) are the powerful ones.
english translation
vyaktAvyaktaM jagadiva nAtikrAmati jAtucit। tatroSNaM bhramatRDglAnisvedadAhAzupAkitAH॥18॥
hk transliteration by Sanscript