Rabinovich emigrated to New York. He opened a kosher restaurant and put up an ad: "Arabs are not allowed to enter." A couple of days later, in the morning, a man of obviously Arab appearance came into the restaurant. The waiter ran to Rabinovich to find out what to do. He thought about it and said:
– Okay, I don't want a scandal. Give him a sandwich and coffee, but put double the price in the bill. He won't come here again.
The waiter did so. But the next day, at lunchtime, the Arab reappeared at the restaurant. Everything happened again, but this time Rabinovich ordered to charge the Arab a triple price. He ate, paid, praised the quality of the food and asked if it was possible to reserve a table for ten people for the evening. Rabinovich thought about it and said to the waiter:
– Okay, reserve a table for him, but you'll double the bill!
An Arab came with his friends. Ordered a fancy dinner and paid without a word. The next day, an ad appeared on Rabinovich's kosher restaurant: "Jews are not allowed to enter."