Musnad Abu Ya'la al-Mawsili 246:4

Ishaq ibn Abi Isra'il narrated to us, Sufyan narrated to us, from al-Zuhri, from Muhammad ibn Jubayr, from his father, who said: I heard the Messenger of Allah (may Allah bless him and grant him peace) saying: "The severer [of kinship ties] shall not enter Paradise."