Ohalos9: 7
בַּמֶּה דְבָרִים אֲמוּרִים? בִּזְמַן שֶׁהִיא כְלִי מְחֻלְחֶלֶת. הָיְתָה פְחוּתָה וּפְקוּקָה בְקַשׁ, אוֹ אֲפוּצָה — אֵיזֶהוּ אֲפוּצָה? שֶׁאֵין לָהּ טֶפַח מִמָּקוֹם אֶחָד — כַּזַּיִת מִן הַמֵּת נָתוּן תַּחְתֶּיהָ, כְּנֶגְדּוֹ, עַד הַתְּהוֹם, טָמֵא. עַל גַּבָּהּ, כְּנֶגְדּוֹ עַד הָרָקִיעַ טָמֵא. בְּתוֹכָהּ אוֹ בַבַּיִת, תּוֹכָהּ וְהַבַּיִת טְמֵאִים.
In what case does this apply? When [the hive] is a utensil with windows. However, if it was broken and stuffed with straw, or [if the windows] were covered (What is con-sidered covered? When there is no window the size of a handbreadth) and an ol-ive-sized piece of corpse is located underneath [the hive], [utensils] directly below [the hive], as deep as one can go, become tamei. [If the olive-sized piece is] above [the hive], [utensils] directly above [the ol-ive-sized piece] up to the sky become tamei. [If the olive-sized piece is] inside [the hive] or the house, inside [the hive] and the house become tamei.