Reference for Chullin 270:6

ישראל ועובד כוכבים שלקחו שדה בשותפות טבל וחולין מעורבים זה בזה דברי רבי

If an Israelite and a gentile bought a field jointly, tebel and hullin<span class="x" onmousemove="('comment',' Tebel (lit., mixed) is produce which is subject to tithes but from which these have not been separated. Hullin (lit., common, unconsecrated) is produce that is free entirely from tithes, e.g., what is bought from a gentile.');">⁵</span>

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