Musnad Abu Ya'la al-Mawsili 42:407

From Abu Sa’id al-Khudri, from the Messenger of Allah (may Allah bless him and grant him peace), that he said: "Gabriel came to me and said: 'Indeed, my Lord and your Lord says: "How have I raised your mention?"' He said: 'Allah knows best.' He said: 'Whenever I am mentioned, you are mentioned with Me.'"