As for the self, it is fulfilled by personally taking up arms for anyone who is able and properly qualified.
As for the tongue, it is by inviting people to Allah’s religion and spreading it, defending Islam, debating the atheists and refuting them, and broadcasting the call through every available medium, thereby establishing the proof against the stubborn.

5 – Because jihad may be waged with the tongue, spending zakah funds on inviting people to Allah comes under the allocation “in the path of Allah.”

6 – Hadith no. 1095 also demonstrates the obligation of jihad. Jihad is a communal duty: when enough people discharge it, the rest are absolved. Allah the Exalted says, “It is not for the believers to go forth all together; rather, from every group among them a party should go forth so that they may gain understanding of the religion and warn their people when they return to them, so that they may beware.” (122) [al-Tawbah].

7 – Jihad becomes an individual duty in three situations:
(a) When the battle lines have been drawn and the Muslims confront the enemy. Allah says, “O you who believe! When you meet those who disbelieve advancing, do not turn your backs. Whoever turns his back on them that day—unless manoeuvring for battle or withdrawing to join another group—has incurred Allah’s wrath, and his abode is Hell, an evil destination.” (15–16) [al-Anfal].
(b) When the ruler calls a person out and he has no valid excuse. Allah says, “What is the matter with you that, when you are told, ‘Go forth in the path of Allah,’ you cling heavily to the earth?” (38) [al-Tawbah].
(c) When the enemy enters his land and his participation is needed, for repelling the aggressor is part of cooperating in righteousness and piety. Allah says, “Cooperate in righteousness and piety.” (2) [al-Ma’idah].

8 – Hadith no. 1096 shows that direct participation in fighting and engaging the enemy is not prescribed for women, because they are generally less physically robust, more tender-hearted, and less able to endure the dangers of combat. This does not, however, prevent them from treating the wounded, giving water to the thirsty, and similar forms of assistance.