Musnad Abu Ya'la al-Mawsili 149:90

Abu Bakr ibn Abi Shaybah narrated to us, Waki' narrated to us, from Mu'awiyah ibn Abi Muzarrid, from Yazid ibn Ruman, from 'Urwah, from 'Aishah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "The womb (kinship) is hanging from the Throne (al-'Arsh), saying: 'Whoever maintains me, Allah will maintain him, and whoever severs me, Allah will sever him.'"