Allah tells us how His Messenger is merciful and sincere towards his Ummah, and how he is closer to them than they are to themselves. His judgement or ruling takes precedence over their own choices for themselves, as Allah says:
}But no, by your Lord, they can have no faith, until they make you judge in all disputes between them, and find in themselves no resistance against your decisions, and accept with full submission .} (4:65)
In the Sahih it says:
«By the One in Whose Hand is my soul, none of you truly believes until I am dearer to him than his own self, his wealth, his children and all the people.» [1]
It was also reported in the Sahih that 'Umar, may Allah be pleased with him, said: "O Messenger of Allah, by Allah, you are dearer to me than everything except myself." He said,
[1] Fath Al-Bari 1:75.
}And blood relations among each other have closer personal ties in the decree of Allah than the believers and the Muhajirin,}
This is an abrogation of the rule that existed previously, whereby they could inherit from one another by virtue of the oath of brotherhood among them. Ibn 'Abbas and others said: "A Muhajir would inherit from an Ansari even though they were not related by blood, because of the brotherhood established between them by the Messenger of Allah."
This was also stated by Sa'id bin Jubayr and others among scholars of the earlier and later generations.
}except that you do kindness to those brothers.}
means, the idea of inheriting from one another has gone, but there remains the duty to offer support and kindness, to uphold ties of brotherhood and to offer good advice.
}This has been written in the Book.} This ruling, which is that those who are blood relatives have closer personal ties to one another, is written in the first Book.
[1] Al-Bukhari nos. 2292, 4580, 6747.