ולא תטמעו בהם ונטמתם בם (שמיני יא:מג)

The holy Meor Einiyim zt”l was a guest at someone’s home and was served a cup of tea, with the milk next to it.  The Meor Einiyim drank the tea but didn’t touch the milk. His host asked why the Rebbe didn’t drink the milk, to which he replied “I don’t see any milk on the table!”.

The host decided to investigate the milk’s origins and learned that whilst his wife used to always make sure to oversee their non-Jewish maid milking the cows each morning, that morning however she wasn’t present during the milking.  Since a non-Jew milked the milk, it was considered “חלב עכו”ם” – milk of a non-Jew.

Understandably, the holy eyes of the ‘Meor Einiyim’ could not ‘see’ this milk.