Are the Ashes of Dried Dung pure or not?

Q: Taharaat-17: In our a:ea, dung is dried and then burnt. Are the ashes of This dried dung Pure or not?

Answer: when the dung is burnt and becomes ashes, its name, substance and description changes completely, because of which it is regarded to be pure And Allaah know best what is most correct.

Fatawa Rahimiyyah vol.2