Some Muslims hold an additional action that Muslims are required to perform:
The Struggle (Jihad) is interpreted differently by different teachers and sects of Islam.
Some believe it is the internal struggle to live a life pleasing to God. This is referred to as the “smaller Jihad”. Others believe that the Jihad is the struggle to spread the Islamic faith and preserve or defend Islamic beliefs from attack to the point of being killed for one’s faith. This is called the “greater Jihad”.
“Fight those who believe not in Allah nor the Last Day,
Nor hold that forbidden which hath been forbidden by Allah and His Messenger
Nor acknowledge the Religion of Truth
from among The People of the Book, until they pay the Jizyah (tax) with willing submission and fell themselves subdued.” – Surah al’Tawbah 9.29
In America, the Struggle or Jihad is associated with the most violent and extreme interpretation used by some terrorist groups; this Jihad is the external struggle with non-Muslims in order to advance Islam through force and violence. The vast majority of Muslims do not hold this view.
“Fight in the cause of Allah those who fight you,
But do not transgress limits; For Allah loveth not transgressors.
And slay them wherever ye catch them, and turn them out from where they have turned you out
For tumult and oppression are worse than slaughter;
But fight them not at the Sacred Mosque,unless they first fight you there;
But if they fight you, slay them. Such is the reward of those who suppress faith.
But if they cease, Allah is Oft-forgiving, Most Merciful
and fight them on until there is no more tumult or oppression,
and there prevail justice and faith in Allah
But if they cease, Let there be no hostility except to those who practice oppression.” – Surah al’Bakara 2.190-193
Most Muslims interpret this passage as a historical command for that specific time in the past.