Q:

Assalamu alaikum I’m woman & I have question about clay. As far I know if clay is made of pure mud, it is pure. What is pure mud & impure mud?  In case of things containing clay if there is no way to know whether the clay comes from pure mud or impure mud, should I stop using it?

A:

Wa alaykum assalam warahmatullah wabarakatuh,

In the Name of Allah, the All-Merciful, the Mercy-Giving,

Peace and blessings be upon His noble Prophet Muhammad.

Usually clay does not contain najasah (ritually impure substances). So, basically you should not worry about it, even if you are not sure of its origin, unless you have information that indicates otherwise.

Almighty Allah knows best.