59:9Al-Hashr

"When the Messenger of Allah (s.a.w) arrived in Al-Madinah the Muhajirun came to him and said: 'O Messenger of Allah! We have not seen a people more willing to sacrifice when having a lot, nor more patient when having a little than the people whom we are staying among. Our provisions are so sufficient, and we share with them in their produce such that we fear that all our reward is gone. So the Prophet (s.a.w) said: "No. As long as you supplicate to Allah for them and praise (show gratitude to) them(for it)."

“in Al-Madinah there are men who, every time you crossed a valley or travelled a road, they shared with you in the reward. They were kept behind by (legitimate) excuses.”

A man came to the Prophet. The Prophet (ﷺ) sent a messenger to his wives (to bring something for that man to eat) but they said that they had nothing except water. Then Allah's Messenger (ﷺ) said, "Who will take this (person) or entertain him as a guest?" An Ansar man said, "I." So he took him to his wife and said to her, "Entertain generously the guest of Allah's Messenger (ﷺ) " She said, "We have got nothing except the meals of my children." He said, "Prepare your meal, light your lamp and let your children sleep if they ask for supper." So she prepared her meal, lighted her lamp and made her children sleep, and then stood up pretending to mend her lamp, but she put it off. Then both of them pretended to be eating, but they really went to bed hungry. In the morning the Ansari went to Allah's Messenger (ﷺ) who said, "Tonight Allah laughed or wondered at your action." Then Allah revealed: "But give them (emigrants) preference over themselves even though they were in need of that And whosoever is saved from the covetousness Such are they who will be successful." (59.9)

I recommend that my successor should take care of and secure the rights of the early emigrants; and I also advise my successor to be kind to the Ansar who had homes (in Medina) and had adopted the Faith, before the Prophet (ﷺ) migrated to them, and to accept the good from their good ones and excuse their wrong doers.

Referring to the verse: "Those who believed and adopted exile... As to those who believed but came not into exile": A bedouin (who did not migrate to Medina) did not inherit from an emigrant, and an emigrant did no inherit from him. It was abrogated by the verse: "But kindred by blood have prior rights against each other."