Reference for Bava Metzia 8:7
הַמַּשְׂכִּיר בַּיִת לַחֲבֵרוֹ, הַמַּשְׂכִּיר חַיָּב בַּדֶּלֶת, בַּנֶּגֶר, וּבְמַנְעוּל, וּבְכָל דָּבָר שֶׁמַּעֲשֵׂה אֻמָּן. אֲבָל דָּבָר שֶׁאֵינוֹ מַעֲשֵׂה אֻמָּן, הַשּׂוֹכֵר עוֹשֵׂהוּ. הַזֶּבֶל, שֶׁל בַּעַל הַבַּיִת, וְאֵין לַשּׂוֹכֵר אֶלָּא הַיּוֹצֵא מִן הַתַּנּוּר וּמִן הַכִּירַיִם בִּלְבָד:
If one rents a house to his neighbor, the owner must provide door, door bolt, [(which is stuck in the threshold post)], lock, and everything which requires the work of a craftsman. But the tenant must provide anything which does not require the work of a craftsman. Animal dung belongs to the owner. [This, when it comes from other beasts; for, if from those of the tenant, it belongs to the tenant.] Only what comes from oven and stove [ash-fertilizer] belongs to the tenant.