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ʾinna lladhīna ʾāmanū wa-hājarū wa-jāhadū bi-ʾamwālihim wa-ʾanfusihim fī sabīli llāhi wa-lladhīna ʾāwaw wa-naṣarū ʾulāʾika baʿḍuhum ʾawliyāʾu baʿḍin wa-lladhīna ʾāmanū wa-lam yuhājirū mā lakum min walāyatihim min shayʾin ḥattā yuhājirū wa-ʾini stanṣarūkum fī d-dīni fa-ʿalaykumu n-naṣru ʾillā ʿalā qawmin baynakum wa-baynahum mīthāqun wa-llāhu bi-mā taʿmalūna baṣīrun
Indeed those who have believed and migrated and waged jihad with their possessions and persons in the way of Allah, and those who gave [them] shelter and help—they are heirs of one another. As for those who have believed but did not migrate, you have no heirdom in relation to them whatsoever until they migrate. Yet if they ask your help for the sake of religion, it is incumbent on you to help them, excepting against a people with whom you have a treaty; and Allah watches what you do.
— Ali Quli Qarai
Surah Al-Anfal – Verse 72
72. “Verily those who believed and migrated and strove with their properties and their selves in the way of Allah, and those who gave shelter and helped (the strivers), those are friends one of another. And those who believed but they did not migrate, you have not any friendship towards them until they migrate. Yet if they ask your help for (the sake of) religion, then it is your duty to help (them), save against a people with whom you have a treaty; and Allah sees all that you do.”
Those who had Faith and, for the love of Allah and Messenger, separated from their homes and relations, i.e. they migrated from Mecca to Medina, and those who gave shelter to the Emigrants and helped them in war against their enemies, i.e. Ansar (the Helpers), inherit each other. The Emigrants and the Helpers inherited from each other because of the brethren contract they concluded from the beginning with each other until the time when this matter was abrogated by Surah Al-‘Anfal, No. 8, verse 75, which says:
If the believers who did not migrate ask you to help them for the sake of the religion of Allah against infidels, you should help them, except for the group of infidels who have concluded the agreement of non-opposition with you. In this case you cannot help the Muslims in war against them. The verse says: