Nedarim7: 4
הַנּוֹדֵר מִן ,,הַבַּיִת” — מֻתָּר בָּעֲלִיָּה; דִּבְרֵי רַבִּי מֵאִיר. וַחֲכָמִים אוֹמְרִים: עֲלִיָּה בִּכְלָל ,,הַבָּיִת”. הַנּוֹדֵר מִן ,,הָעֲלִיָּה” — מֻתָּר בַּבָּיִת.
Someone who makes a neder prohibiting a house is permitted the upper story; [these are] the words of R' Meir. The Sages, however, say: The upper story is included in the [term] house. One who makes a neder prohibiting from the upper floor is permitted the house.