Musnad Ahmad 5:472

'Abd al-Rahman narrated to us, from Sufyan, from al-A'mash, from Abu al-Duha, from Shutayr ibn Shakl, from 'Ali, who said: They distracted us on the Day of the Confederates (al-Ahzab) from the afternoon prayer (Asr), until I heard the Messenger of Allah, peace and blessings of Allah be upon him, say: "They distracted us from the middle prayer, the afternoon prayer. May Allah fill their graves, their houses, and their bellies with fire."