Kiddushin has to be effected with a declaration like “behold you are bethrothed to me.” What other wording can effect kiddushin? What about by divorce? Are there situations where no declaration is necessary? One cannot bethroth a woman with money in a case that she borrowed money and he says that the money she owes will effect the kiddushin. What other cases are similar that would work but aren’t recommended? Can a sale, a marriage, pidyon haben, truma be effected by giving the money/gift to the other conditioned upon it being returned?