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 And if they would betray thee, they betrayed Allah before, and He gave (thee) power over them. Allah is Knower, Wise. 71 Those who believe, and have emigrated and struggled with their possessions and their selves in the way of God, and those who have given refuge and help -- those are friends one of another. And those who believe, but have not emigrated -- you have no duty of friendship towards them till they emigrate; yet if they ask you for help, for religion's sake, it is your duty to help them, except against a people between whom and you there is a compact; and God sees the things 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 Those who believe and have migrated and strove in the way of Allah, and those who gave them refuge and help - it is they who are the true believers. Theirs shall be forgiveness and honourable sustenance. 74 And those who afterwards believed and migrated and fought along with you – they too are from among you; and family members (blood relations) are nearer to one another in the Book of Allah; indeed Allah knows everything. 75