ויחזו את האלקים ויאכלו וישתו (משפטים כד:יא)

The holy Baal Shem Tov once stayed at a guest house together with the ‘Nodah B’Yehudah.’ In the interim, the host came in to ask a question on the Kashrus of a bird. The Noda B’Yehudah took the bird in his hand and turned it around, back and forth, and rendered it Kosher. The Baal Shem Tov exclaimed: “We saw right away that it is kosher since Hashem’s name shone from it!” ויחזו את האלקים– when one sees the name of Hashem shine, then ויאכלו וישתו -one is allowed to eat and drink from it.