…(A leather loop passingunder a horse’s tail and is buckled to the saddle.) In a dream, a crupper represents a contemptuous and a lowly guardian who profiteers and takes advantage of his position. A crupper in a dream also represents a servant who has a secret affair with his mistress. A crupper in a dream also means money or a money belt….
Dream dictionary: Crupper dream meanings
…The ass in dreams denotes a good servant or slave, that is profitable to his master; it also indicates a foolish and ignorant person. To dream you see an ass, is a sign of malice. To see an ass sitting on his crupper, denotes laboriousness. To dream you hear an ass bray, shows you shall meet with some loss. To dream of asses bearing charge, strong and obedient, is good for friendship and company, and signifies the wife’s companion or friend, being not proud above their estate, or fierce, but gentle and very obedient; they are also good in affairs and enterprises. To see an ass run, denotes misfortune, especially to a man that is sick….