Reference for Bava Metzia 173:5
כתיב (בראשית יח, ו) לושי ועשי עוגות וכתיב (בראשית יח, ח) ויקח חמאה וחלב ובן הבקר ואילו לחם לא אייתי לקמייהו
for there is a place where <i>shekels</i> are called <i>centenaria</i>.<span class="x" onmousemove="('comment',' Hence he gave him 400 centenaria, instead of ordinary shekels as he demanded at first: this is deduced from the phrase 'current money with the merchant', implying that it was recognised everywhere as a shekel. ');"><sup>8</sup></span> Scripture writes, [<i>ordinary</i>] <i>meal</i>, and [it is then written], <i>fine meal</i>!<span class="x" onmousemove="('comment',' Ibid. XVIII, 6: And Abraham hastened into the tent unto Sarah, and said, Make ready quickly three measures of [H]; the two words being apparently mutually exclusive. ');"><sup>9</sup></span>