الكافي 2/1/68/26

26. It is narrated from him (narrator of the Hadith above) from al-Washsha’ from Muhammad ibn Fudayl al-Sayrafi from al-Rida عليه السلام who has said the following: “The kindred relation of the family of Muhammad, the A ’immah (people who possess Divine Authority), recipients of divine supreme covenant, holds to the Throne (of the Lord) and says, ‘O Lord establish good relations with those who establish good relations with me and cut off with those who cut off with me. ’ Thereafter it is applicable to the kindred relations of the believers. The Imam then read this verse: ‘Have fear of the One by whose name you swear to settle your differences and have respect for your relatives. . . (4:1)