Reference for Bava Batra 99:7

דתניא המוכר את עבדו ופסק עמו שישמשנו שלשים יום

their action is null and void?<span class="x" onmousemove="('comment',' The question then remains, in spite of Rabah R. son of Huna's gloss. what property is excluded from the rule? ');">⁷</span>

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