Albert Barnes Commentary Deuteronomy 23:18

"Thou shalt not bring the hire of a harlot, or the wages of a dog, into the house of Jehovah thy God for any vow: for even both these are an abomination unto Jehovah thy God." — Deuteronomy 23:18 (ASV)

Another Gentile practice, connected with the one alluded to in the preceding verse, is here forbidden. The word “dog” is figurative , and equivalent to the “sodomite” of the preceding verse.