The tie of kinship is suspended to the Throne and says: He who unites me Allah would unite him and he who severed me Allah would sever him.
Sahih Muslim Book 45, Hadith 19
← Previous Hadith Verily Allah created the universe and when He had finished that, ties of relationship came forward and said This is the place for him who seeks refuge from severing (of blood-relationship). He said: Yes. Are you not satisfied that I should keep relationship with one who joins your ties of relationship and sever it with one who severs your (ties of relationship)? They (the ties of blood) said: Certainly so. Thereupon He said: Well, that is how things are for you. Allah's Messenger (ﷺ) then said: Recite if you like:" But if you turn away you are sure to make mischief in the land and cut off the ties of kinship. Those it is whom Allah has cursed, so He has made them deaf and blinded their eyes. Do they not reflect on the Qur'an? Or, are there locks on their hearts?".

Sahih Muslim Book 45, Hadith 18 Next Hadith → The severer would not enter Paradise. Ibn Umar said that Sufyan (explained it as): One who severs the tie of kinship would not enter Paradise.

Sahih Muslim Book 45, Hadith 20