Musnad Ahmad 1153:472

Abu Salamah narrated to us, he said: Bakr bin Mudar narrated to us, he said: Sakhr bin Abd al-Rahman bin Harmalah narrated to us, he said: Abu Salamah bin Abd al-Rahman narrated to me, from Aisha, the Mother of the Believers, she said: The Messenger of Allah, peace and blessings of Allah be upon him, used to say to them: "Indeed, your affair is among what concerns me after I am gone, and none will be patient with you except the patient ones." And Qutaybah said: "Sakhr bin Abdullah."