Abu Huraira reported Allah's Messenger ﷺ as saying, “A man of those who were before your time bought some real estate from another, and the buyer found in what he had bought a jar containing gold. The buyer told the other to take his gold from him as he had bought from him only the property and had not bought the gold from him, but the man who had sold the land said he had sold him the land and its contents. They brought the matter before another for decision and he asked whether they had any children. When one said he had a boy and the other said he had a girl, he told them to marry the boy to the girl and spend* some of the gold on them and give sadaqa.” *While the dual has been used with reference to the two men, the plural is used for “marry" and “spend’’. (Bukhari and Muslim.)