that is exposed to wind and sun and turns into soil. Is it permissible to pray on it or not?

He replied:

As for the transformation of impure matter, such as ash from impure dung and impure manure that turns into soil, this issue has already been discussed. We have mentioned that there are two views concerning it within the schools of Mālik and Ahmad.

One is that it is pure. This is the view of Abū Hanīfah, the literalists, and others. We have also mentioned that this is the stronger view.

As for ground affected by impurity, some followers of al-Shāfiʿī and Ahmad hold that it becomes pure even if they do not accept purification through transformation. Thus, considering this issue together with “the issue of transformation,” there are three views. The correct view is that purity is achieved in all these cases, as explained previously.

He—may Allah have mercy on him—said:

Section

As for mud in the streets, its ruling rests on a fundamental question: if the ground is affected by impurity, which then disappears through wind, sunlight, or the like, does the ground become pure?