Musnad Abu Ya'la al-Mawsili 3:127

Abu al-Rabi' narrated to us, Hammad narrated to us, from 'Asim, from Zirr ibn Hubaysh, from 'Ali, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "May Allah fill their graves and their hearts with fire, just as they distracted us from the middle prayer." He said: And it is the 'Asr (afternoon) prayer.