Musnad Ahmad 28:192

Abu Mu'awiyah narrated to us, Dawud ibn Abi Hind narrated to us, from 'Amr ibn Shu'ayb, from his father, from his grandfather, who said: The Messenger of Allah (peace and blessings of Allah be upon him) went out one day while the people were discussing the Divine Decree (Qadar). He said: It was as if pomegranate seeds had burst upon his face from anger. He said: So he said to them: "What is the matter with you that you strike the Book of Allah, some of it against some of it? By this, those who were before you perished." He said: I did not envy myself for any gathering in which the Messenger of Allah (peace and blessings of Allah be upon him) was present that I did not witness, as I envied myself for that gathering, that I did not witness it.