A burn is very painful in waking life, but its dream metaphor has a totally different meaning. A burn in a dream means a financial strike. It foretells a gain in finances soon. In a way, this dream interpretation resembles the proverb, strike while the iron is hot, and make hay while the sun shines. In this case, handling the hot iron may cause a burn in the process. It is strange how a dream metaphor feeds on a proverb.
Have you seen similar dream imagery whereby the symbolism later played out to be true?