Silsilat al-Ahadith al-Sahihah

It is narrated from Sayyiduna Abu Salamah (may Allah be pleased with him), he says: Sayyiduna Abu Darda Laysi (may Allah be pleased with him) fell ill, and Sayyiduna Abdur Rahman bin Awf (may Allah be pleased with him) came to visit him. Abu Darda said: (This Abdur Rahman) is the best and most devoted in maintaining ties. O Abu Muhammad! Do you know? Abdur Rahman said: I heard the Messenger of Allah (peace and blessings of Allah be upon him) say: Allah the Exalted said: I am Allah and I am the Most Merciful (Rahman). I created the womb (i.e., kinship) and derived its name from My own name. Whoever maintains it, I will maintain him, and whoever cuts it off, I will cut him off.