Musnad Ahmad 853:1

'Abd al-Rahman ibn Mahdi narrated to us, Musham'il ibn Iyas narrated to us, he said: I heard 'Amr ibn Sulaym al-Muzani saying: I heard Rafi' ibn 'Amr al-Muzani saying: I heard the Messenger of Allah, peace and blessings of Allah be upon him, saying: "The Ajwa (date) and the rock are from Paradise."