Silsilat al-Ahadith al-Sahihah

Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) says: The Messenger of Allah (peace and blessings be upon him) twisted his finger for us and said: "Maintaining ties of kinship is a branch connected to the Most Merciful. It has an eloquent and expressive tongue; it speaks as it wishes. Whoever maintains it, Allah will maintain him, and whoever severs it, Allah the Exalted will sever him."