Mishnayos Nedarim Perek 7 Mishnah 5

For one who vows that a bed is forbidden to him, it is permitted to lie in a dargash, which is not commonly called a bed; this is the statement of Rabbi Meir. And the Rabbis say: A dargash is included in the category of a bed. Everyone agrees that for one who vows that a dargash is forbidden to him, it is permitted to lie in a bed. For one who vows that the city is forbidden to him, it is permitted to enter the Shabbat boundary of that city, the two-thousand-cubit area surrounding the city, and it is prohibited to enter its outskirts, the seventy-cubit area adjacent to the city. However, for one who vows that a house is forbidden to him, it is prohibited to enter only from the doorstop and inward.

הַנּוֹדֵר מִן הַמִּטָּה, מֻתָּר בְּדַרְגָּשׁ, דִּבְרֵי רַבִּי מֵאִיר. וַחֲכָמִים אוֹמְרִים, דַּרְגָּשׁ בִּכְלָל מִטָּה. הַנּוֹדֵר מִן הַדַּרְגָּשׁ, מֻתָּר בְּמִטָּה. הַנּוֹדֵר מִן הָעִיר, מֻתָּר לִכָּנֵס לִתְחוּמָהּ שֶׁל עִיר, וְאָסוּר לִכָּנֵס לְעִבּוּרָהּ. אֲבָל הַנּוֹדֵר מִן הַבַּיִת, אָסוּר מִן הָאֲגַף וְלִפְנִים: