Musnad Ahmad 30:1172

Abu Amir narrated to us, Al-Mughirah ibn Abd al-Rahman narrated to us, from Abu al-Zinad, from Musa ibn Abi Uthman, from his father, from Abu Hurairah, from the Prophet, may Allah bless him and grant him peace, who said: "Indeed, Allah, the Almighty and Majestic, created Adam in His image." Abdullah ibn Ahmad said: "And it was in my father's book: 'And his height was sixty cubits,' but I do not know if he narrated it to us or not."