They did not store it in large casks but rather in small barrels, and one does not fill the barrel to its rim so that it should be aromatic. One does not bring from its mouth because of the mold, nor from its bottom because of the sediment. Rather, one brings from the middle third and from its middle. How does he check? The treasurer sits with the reed in his hand. [When] it exuded the vein [of sediment], he struck with the reed. R’ Yose bar R’ Yehudah says: Wine in which mold developed is unfit, as it is stated (Num. 28:19-20, 31): Unblemished they shall be for you and their minchah-offerings; unblemished they shall be for you and their libations.