Although Buddist are impure, their furniture and articles are pure. We must purify those things, which were used by them for eating, drinking, and praying.
Question: The vast majority of people, here, are Buddhist non-Muslims. Therefore if a university student rents a house, what is the rule concerning its state of purity and najāsah? Is it necessary to wash and clean the house? It is noteworthy that most of the houses are made of wood and to wash them is not possible. Further, what is the rule concerning hotels and their furniture and articles?
Answer: he can consider everything in the house ritually pure as long as he does not know that it has become impure. Just conjecture or doubt about impurity is of no value.[1] Unless it is confirmed that the hand or body of a non-Muslim that is not among The People of the Book has touched something in the presence of transferable wetness, that thing will not be considered najis. Presuming that its najāsah has been ascertained, it is not obligatory to purify the doors and walls of homes and hotels, nor their furniture and articles. All that is obligatory is to purify those things which are used for eating, drinking, and praying.[2]
1. Ayatollah Seyyed Ali Sistani, A Code of Practice For Muslims in the West, Taharat & Najasat: Ritual purity & impurity.
2. Ayatollah Seyyed Ali Khamenei, Practical Laws of Islam, Dealing with non-Muslims, Q320.