Ami'r bin Rub'i...
Ami'r bin Rub'i, a Muslim soldier who took part in the war of liberation against the Persians, addressed Rustum, the commander of the Persian army, in these words,(65) "...Allah has certainly raised us and made us come to free people from worshipping of the servants of Allah to worshipping Allah; from the narrowest view of life to the most comprehensive; from the injustice of other religions to the justice of Islam. He has sent us, carrying His Message to His servants, calling them to it.
Should anyone respond positively to our call we accept that from him, turn away and leave him ruling his own land without our intervention. Should anyone refuse this, we fight him incessantly till Allah judges between us." The military policy never took one form but practically it took two distinct shapes: Jihad of liberation and the calling to the path of Allah. The reason behind its legitimacy is that Islam is Allah's Message to His servants on earth.
And naturally the road to Islam is full of obstacles, which are states, forces and rulers. Islam should be preached after overcoming these obstacles. If these barriers block the way of Islam, they should be removed by force. Defensive Jihad. This is ordained for the purpose of preserving the Islamic Message, the Islamic state and the Muslims. Islam should be defended from the plots and schemes of its enemies, the opportunists and those threatened its existence.
Although the strategic and main target of the Muslim military operations, was the removal of barriers from the path of the Islamic da'wah, it can be seen, clearly, the afore-mentioned forms of jihad coloured all Islamic military operations and wars. The battles of Badr, Khaibar, Hunain and the liberation of Mecca fall into the first category while the battles of Khandaq, Mu'tah, Tabuk and others are of the second form. Now let us examine a few examples of the two forms of jihad.
THE GREAT BATTLE OF BADR Since the beginning of the blessed Islamic da'wah until the eighth year after Hijra, Mecca stood firmly in the face of Islam. The well-to-do and influential leaders of the city worked hard to keep the status quo, to serve their interests, syphoning off more wealth and wielding more power. That is why these pre-Islamic leaders did their utmost to stem the emergence of the da'wah, stifle its voice, and extinguish its radian light.