Sayyiduna Jubayr bin Mut'im (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: "The one who severs (ties) will not enter Paradise."
Baqiyyah (the narrator) added "of kinship" in his narration (that is, the one who severs the ties of kinship).
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 1501