"A certain man was pouring wine from one jar into another by means of a tube, when a Goi came along and touched the tube with his hand. As a result all the wine (in both jars) had to be thrown away."

Every vessel, therefore, must be washed which comes into the possession of a Jew from a Christian, although it has never been in use. In Iore Dea (120,1) it says:

"If a Jew buys a vessel for use at table from an Akum, whether it is made of metal, glass or lead, even if it is new, he must wash it in a Mikvah [a large basin], or in a cistern which holds forty quarts of water."