Something Deduced from Its End (final context)
A matter that is learned from its end. From the principle established by the unfolding of the matters at the end of a thing.
(When it says 'And he shall break down the house, its stones, its timber, and all the dust of the house,' something deduced from its end is that the house does not become impure by tumah until it has stones, timber, and dust in it - Yalkut Shimoni Torah, Parashat Tazria, Remez 539.)
Translation
Expression (Hebrew)
דָּבָר הַלָּמֵד מִסּוֹפוֹ
Definition (Hebrew)
עִנְיָן שֶׁנִּלְמַד מִסּוֹפוֹ. מֵהַקָּנֶה הַמֻּסֶּקֶת מֵהִתְפַּתְּחוּת הַדְּבָרִים בְּסוֹפוֹ שֶׁל דָּבָר.
("כְּשֶׁהוּא אוֹמֵר וְנִתָּץ אֶת הַבַּיִת אֶת אֲבָנָיו וְאַתְּ עֵצָיו וְאַתְּ כָּל עָפָר הַבַּיִת, דָּבָר הַלָּמֵד מִסּוֹפוֹ שֶׁאֵין הַבַּיִת מְטַמֵּא בנגעים עַד שֶׁיְּהוּ בּוֹ אֲבָנִים וְעֵצִים ועפר"- יַלְקוּט שִׁמְעוֹנִי תּוֹרָה פָּרָשַׁת תזריע רֶמֶז תקנא)