SB 3.28.40

The blazing firewood and the sparks and the smoke and flame all..., although cannot stay differently, still they are different from one another even though each of them is called part and parcel of the fire. However, less intelligent person accept the smoke as fire also, although fire and smoke is completely different. Similarly, the heat and light of the fire is different, although one cannot make a differentiation of fire from heat and light.