משנה אויף דברים 7:26

Even in such a place where the letting of a house has been permitted, they did not say [that this was permitted if it was] for the purpose of a residence, since the idolater will bring idols into it; for it says, “you shall not bring an abomination into your house” (Deut. 7:26). In no place may one let a bath-house to an idolater, as it is called by the name of the owner.

If he betroths [a woman] with orlah, or kilayim of the vineyard, or an ox condemned to be stoned, or the heifer whose neck is to be broken, or a leper’s bird-offerings, or a nazirite’s hair, or the first-born of a donkey, or meat [boiled] in milk, or non-sacred meat slaughtered in the Temple court, she is not betrothed. If he sells them and betroths [her] with the proceeds, she is betrothed.

If [a Jew] has a house next to an idolatrous shrine and it collapsed, he is forbidden to rebuild it. What should he do? He withdraws a distance of four cubits into his own ground and build there. [If the wall] belonged both to him and the shrine, it is judged as being half and half. Its stones, timber and rubbish defile like a creeping thing, as it says, “you shall utterly detest it” (Deut. 7:26). ] Rabbi Akiba says: [it defiles] like a menstruous woman, as it says, “[and you will treat as unclean the silver overlay of your images and the golden plating of your idols]. You will cast them away like a menstruous woman. Out, you will call to them” (Isaiah 30:22), just as a menstruous woman impurifies [an object] by carrying it, so also an idolatrous object defiles by its being carried.