Allah breaks ties with one who breaks ties with relatives

Relatives are those who are related to you through blood and close-ties; such as the brother, the uncle, the aunt, or their children.

"And give to the relative his right." [Soorah al-Israa' 17:26]

"And worship Allaah alone, and do not set-up any partner to Him in worship,
and be kind and good to the parents, and to the relatives." [Soorah an-Nisaa 4:36]

So it is obligatory upon everyone to treat their relatives in the best possible manner, and to support them in accordance with their needs, and what they seek of help and support.

Bukharee related a hadith in which Prophet (sallallaahu 'alayhi wa sallam) said:

"Indeed Allaah created the creation, until he was finished doing so, the Rahm: (womb/ties of relation) stood-up and said: "Is this the place of one who seeks refuge in you from those who severe and cut ties with me?"

So Allaah said: Yes, Indeed Would it please you that I keep ties with those who keep ties with you, and cut-off ties with those who cut-off lies with you?

So the Rahm': said: "Yes, indeed"

So Allaah said: Then this is for you.

Then Allaah's Messenger (sallallaahu 'alayhi wa sallam) said: "Recite if you wish: "Would you then, if you were given the authority, cause corruption in the land, and cut-off lies of relations. They are those upon whom is the curse of Allaah, so that He makes them deaf and blinds them." [Soorah Muhammad 47:22-23]

The Prophet sallallaahu 'alayhi wa sallam also said: "Whosoever believes in Allaah and the Last Day let him keep the ties of relations." [Bukhari]

Prophet sallallaahu 'alayhi wa sallam said: "The waaasil (one who keeps the ties of relations) is not the one who merely does so out of reciprocation. Rather, the waasil is the one who, even when the relatives cut-off him, yet he still maintains ties with them." So a man asked: O Messenger of Allaah, I have relatives with whom I maintain ties of relations, yet they cut-off from me. I treat them kindly, yet they treat me in an evil manner. And I am forbearing and patient with them, yet they behave rudely and ignorantly towards me. The Prophet (sallallaahu 'alayhi wa sallam) said:

"If the situation is as you say, then it is as if you are filling their mouths with sand. And Allaah will continue to aid and support you as long as you continue doing what you are doing." [Bukhari]