For the source text click/tap here: Pesachim 36
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If this bread, kneaded with milk, is prepared in the shape of an ox’s eye, it is permitted. In other words, if one forms this dough in a unique shape, e.g., the eye of an ox, one may eat it, as it is clearly distinguishable from ordinary bread. Therefore, there is no concern that it will be eaten with meat. However Rashi implies the eye of the ox is a measure of size…not the shape of the bread (like an ox)
The ey of an ox or bull…leads us to ponder Zen and the art of archery and the “zuboshi” or bulls eye