Reference for Bava Batra 65:3

א"ל לקוחה בידי לא מצית אמרת דהא איכא עלה קלא דארעא דיתמי היא אלא זיל אהדרה ניהלייהו וכי גדלי יתמי אשתעי דינא בהדייהו:

I shall certainly be believed when I say that they owe me money. Said Abaye to him: You could not plead that you have bought the land, because common report says that it belongs to the orphans.<span class="x" onmousemove="('comment',' And this is equivalent to a protest, in which case no right can be proved save through a deed of sale. ');">³</span>

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