The Book of Virtue, Good Manners and Joining of the Ties of Relationship (Kitab Al-Birr was-Salat-I-wa'l-Adab)

Muslim :: Book 32 : Hadith 6199

Jubair b. Mut'im reported on the authority of his father that Allah's Messenger (may peace be upon him) said: 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.

Source materials are from the University of Southern California MSA site
Hadith eBooks converted from Imaan Star