Jihad is obligatory upon Muslims without distinction between the pious and the impious, or the sincere in belief and the hypocrite. When the ayaat of jihad came, they came in general. When the texts come in general, they remain general as long as there is no specific text specifying them; there came no text specifying jihad for some Muslims and not others, so the texts remain general. Accordingly it is allowed to enrol hypocrites, the impious and the one who fights due to anger in the Islamic army. As for the permission for them to be present with the sincere believers in fighting the enemies, and the Islamic army, this is due to the generality of the ayaat of jihad. This is also because the Messenger (saw) took the assistance of the head of the hypocrites, Abdullah bin ‘Ubayy, in jihad; he attended some battles and the military consultations with him (saw) on the day of Uhud before the battle. Allah (swt) reproved the Messenger when he permitted the hypocrites to stay behind the fighting in Tabuk. Allah (swt) said:

As for the impious, this is due to the generality of the ayat and due to what Said bin Musayyab narrated from Abu Hurairah (ra) who said:

This is also because jihad is one of the obligations implemented by the Khalifah. If he does not implement it upon upon the impious, who is a Muslim, this would be leaving the implementation of a rule of Allah (swt) which is haram and not permitted. Accordingly it is obliged to implement jihad upon the impious as it is implemented upon the pious equally