Body of Fire

From Chandogya Upanishad , Shankara recites (extracted from the movie Adi Shankara by GV Iyer)

The Heaven is Fire
The Sun its Fuel
The Rays ts Smoke
The Day its Flame
The Star its Sparks
Into this fire God offers the oblation of faith
Out of this the divine king Soma (full moon) arises

The RainGod is indeed Fire
The Wind is Fuel
The Cloud its Smoke
The Lightning its Flame
The Thunderbolt its Embers
The Thunder its Sparks
Into this fire the God offers the oblation of Soma
Out of this Oblation Rain Arises

The Eart its Fire
The Year its Fuel
The Sky its Smoke
The Night its Flame
The Four Direction its Embers
The inter-Directions its Sparks
Into this Fire the God offers the oblation of Rain
Out of this oblation arises Food

Man indeed is the Fire
Speech, his Fuel
Breath, his Smoke
Tongue, his Flame
Eyes, his Embers
The Ears, his Sparks
Into this Fire the God offers the oblation of Food
Out of this oblation the Semen is created

Woman is the Fire
Penis is the Fuel
Copulatory incitation is the Smoke
Her Groin is the Flame
Copulation is the Ember
Orgasm is the Spark
Into this Fire the GOd offers the oblation of Semen
Out of this oblation arises fetus

These Five elements or Panchabhootas thus give rise to Man