What is the ruling on placing stones in mosques with the intention of facilitating tayammum (dry ablution with clean earth) for those who need it?

Question:
Honorable Shaykh, may Allah grant you success. He says: What is the ruling on placing stones in mosques with the intention of facilitating tayammum for those who perform it?

Answer:
This is an unnecessary burden; this is an unnecessary burden. Stones are not placed for this purpose, and one does not perform tayammum with stones. How can one perform tayammum with stones? One does not perform tayammum with stones; one performs tayammum with soil. He goes out of the mosque, or if he finds dust on the walls of the mosque, he performs tayammum with that. Yes.