Reference for Gittin 99:6

אמר אביי תדע דבע"ח דיניה בבינונית ומיתמי בזיבורית

Mar Zutra the son of R. Nahman said in the name of R. Nahman: If a claim is made from orphans on the strength of a bond [given by their father], even though the best land is mentioned in it, payment can be recovered only from the worst. Abaye said: The proof of this<span class="x" onmousemove="('comment',' That such a stipulation is of no avail where orphans are concerned. ');">⁶</span>

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