The correct spelling for the phrase "hast business with" is spelled as /hæst ˈbɪznəs wɪð/. The word "hast" is an archaic form of the verb "have" used in old English literature. It is spelled with "a" instead of "e" because it is pronounced with a short "a" sound. "Business" is spelled as it is pronounced, with the "u" pronounced like the "i" in "bit". "With" is spelled with a silent "h", and the "i" sounds like the "i" in "pin".