Ohalos9: 2
הָיְתָה גָבוֹהַּ מִן הָאָרֶץ טֶפַח, טֻמְאָה תַחְתֶּיהָ אוֹ בַבַּיִת אוֹ עַל גַּבָּהּ — הַכֹּל טָמֵא, אֶלָּא תוֹכָהּ. בְּתוֹכָהּ, הַכֹּל טָמֵא.
[If the hive] is one handbreadth above the ground and there is tumah below it, in-side the house, or above [the hive] — everything becomes tamei, except for that which is inside [the hive]. [If the tumah is] inside [the hive], everything becomes tamei.