The World Federation One Stop Fiqh

Ruling 2035

Wheat or any other thing that a person gives as fiṭrah must not be mixed with soil or any other thing. In the event that it is mixed and the item itself is equal to one ṣāʿ and it is usable without having to separate it from the other thing, or if separating it does not require extraordinary effort, or the amount that has been mixed is negligible, then there is no problem.