Apostolic Constitutions, Book VII 29
1All the first-fruits of the winepress, the threshing-floor, the oxen, and the sheep, shall you give to the priests, that your storehouses and garners and the products of your land may be blessed, and you may be strengthened with grain and wine and oil, and the herds of your cattle and flocks of your sheep may be increased. You shall give the tenth of your increase to the orphan, and to the widow, and to the poor, and to the stranger. All the first-fruits of your hot bread, of your barrels of wine, or oil, or honey, or nuts, or grapes, or the first-fruits of other things, shall you give to the priests; but those of silver, and of garments, and of all sort of possessions, to the orphan and to the widow.