dhumad vapi sva-sambhavat
yathagnih prthag ulmukat
yatha—as; ulmukat—from the flames; visphulingat—from the sparks; dhumat—from the smoke; va—or; api—even; sva-sambhavat—produced from itself; api—although; atmatvena—by nature; abhimatat—intimately connected; yatha—as; agnih—the fire; prthak—different; ulmukat—from the flames.
The blazing fire is different from the flames, from the sparks and from the smoke, although all are intimately connected because they are born from the same blazing wood.
Although the blazing firewood, the sparks, the smoke and the flame cannot stay apart because each of them is part and parcel of the fire, still they are different from one another. A less intelligent person accepts the smoke as fire, although fire and smoke are completely different. The heat and light of the fire are separate, although one cannot differentiate fire from heat and light.
Link to this page: https://prabhupadabooks.com/sb/3/28/40