Musnad Ahmad 719:0

Narrated to us by Hisham ibn Sa’id, who said: Narrated to us by Muhammad ibn al-Muhajir, from al-Rabi’ ibn Anas, from Damrah ibn Tha’labah, who said: The Messenger of Allah (ﷺ) said: "The people will continue to be in goodness as long as they do not envy one another."