Musnad Ahmad 1687

It was narrated from Ibraheen bin ‘Abdullah bin Qariz. that his father told him that he entered upon "Abdur-Rahman bin ’Awf when he was sick, and ‘Abdur-Rahman said to him. May your rahim uphold ties of kinship with you. The Prophet (ﷺ) said: "Allah, may He be glorified and exalted, said: "I am Allah and I am ar-Rahman, I have created arrahim (ties of kinship) and have derived its name from My name. Whoever upholds ties of kinship, I will uphold ties with him and whoever breaks ties of kinship, I shall cut him off."