Musnad Ahmad 32:1306

Yahya ibn Adam narrated to us, Ibn al-Mubarak narrated to us, from Yunus ibn Yazid, from Abu Ali ibn Yazid, the brother of Yunus ibn Yazid, from al-Zuhri, from Anas ibn Malik, that the Messenger of Allah (may Allah bless him and grant him peace) recited it: "And We ordained for them therein: a life for a life, and an eye for an eye," [reciting] *al-nafs* (the life) in the accusative case (*nasb*), and *al-ayn* (the eye) in the nominative case (*raf'*).