If the jamah has started, you have only one option and that is to pray it after the jamah is over or aft sunrise. It is forbidden to pray it while the jamah is on

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If there is impurity on the shoe, it is not permissible. But usually, any impurity you step on, it goes away by walking. Therefore, if you are not 100% certain of the impurity being on your shoes, it is permissible to pray in them.

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