An Arab sheikh was on his deathbed and the only thing that could save him was a blood transfusion. However, he had a very rare blood type, and only after a long, intensive search was a donor is found: an old Jewish man who agreed to donate his blood in exchange for a reward.
The sheikh's life was saved and he gratefully gave the old man a luxury mansion.
Some time passed and the sheikh again fell ill with the same condition. The old Jew donated his blood a second time, but this time only received a box of dates in exchange.
"But," he exclaimed to the sheikh, "last time you gave me a mansion!"
"Last time I had no Jewish blood in me."
Funny old Arab sheikh Jewish joke