Musnad Ahmad 1301:19

'Abd al-Rahman narrated to us, from Sufyan, from al-A'mash, from Salim ibn Abi al-Ja'd, from Umm al-Darda', who said: Abu al-Darda' entered upon me while he was angry. I said to him: "What is the matter with you?" He said: "I do not recognize anything of the affair of Muhammad, peace and blessings of Allah be upon him, except the prayer."