Musnad Abu Ya'la al-Mawsili 110:40

Sa'id ibn Yahya narrated to us, he said: My father narrated to me, from Isma'il ibn Abi Khalid, from al-Sha'bi, who said: Ibn 'Abbas informed me that he entered the grave of the Prophet, may Allah bless him and grant him peace, along with 'Ali and al-Fadl and Usamah. He said: And Marhab informed me that they brought in 'Abd al-Rahman ibn 'Awf. It is as if I am looking at them in the grave, four of them. Al-Sha'bi said: And who is more entitled to the man than his family?