If you find that the interests of the Muslims as a whole or of an individual will be affected as a result of attending Jumu`ah, it is permissible to miss Jumu`ah prayer to pray Dhuhr instead.

Those who attend Jumu`ah prayers have to be silent and listen attentively to the Imam. It is not permissible to talk during the Khutbah except in the cases indicated by the evidence, such as speaking to the Khatib or responding to him, or in cases of necessity such as saving a blind man from falling and so on.