Reference for Bava Batra 192:1

ושמואל אמר חמרא אכתפא דמאריה שוואר

and Samuel says: Wine leaps upon the shoulder of its owner.<span class="x" onmousemove="('comment',' I.e., the purchaser bears the responsibility for the wine. It is his misfortune that the wine turned sour. ');">¹</span>

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