Prophet, tell those you have taken captive: "If God knows of any good in your hearts, He will give you something better than what has been taken from you, and He will forgive you: God is Forgiving and Merciful." 70 But if they seek to betray you, know that they had already betrayed Allah. Therefore He made you prevail over them. Allah is All-Knowing, All-Wise. 71 Surely those who believed and migrated and strove hard in the way of Allah with their possessions and their lives, and those that sheltered and helped them - they alone are the true allies of one another. And those who believed but did not migrate (to Dar-al-Islam), you are under no obligation of alliance unless they migrate. And should they seek help from you in the matter of religion, it is incumbent on you to provide help unless it be against a people with whom you have a pact. Allah is cognizant of all that you do. 72 And those who disbelieve are allies to one another, (and) if you (Muslims of the whole world collectively) do not do so (i.e. become allies, as one united block with one Khalifah - chief Muslim ruler for the whole Muslim world to make victorious Allah's Religion of Islamic Monotheism), there will be Fitnah (wars, battles, polytheism, etc.) and oppression on earth, and a great mischief and corruption (appearance of polytheism). 73 And they who have attained to faith, and who have forsaken the domain of evil and are striving hard in God's cause, as well as those who shelter and succour [them] - it is they, they who are truly believers! Forgiveness of sins awaits them, and a most excellent sustenance. 74 And as for those who henceforth come to believe, and who forsake the domain of evil and strive hard [in God's cause] together with you - these [too] shall belong to you; and they who are [thus] closely related have the highest claim on one another in [accordance with] God's decree. Verily, God has full knowledge of everything. 75