Musnad Ahmad 459:18

Haytham ibn Kharijah narrated to us, he said: Ibn ‘Ayyash—meaning Isma’il—narrated to us, from Safwan ibn ‘Amr, from ‘Abd al-Rahman ibn Maysarah, from al-‘Irbad ibn Sariyah, he said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Allah, the Almighty and Majestic, said: 'Those who love one another for the sake of My Majesty shall be in the shade of My Throne on a day when there is no shade except My shade.'" ‘Abdullah said: "And I think I heard it from him."