Musnad Ahmad 27:2005

Abu Qatan narrated to us, Shu'bah narrated to us, from 'Abdullah ibn Abi al-Safar, from al-Sha'bi, who said: "I sat with Ibn 'Umar for two years, and I did not hear him narrate anything from the Messenger of Allah, may Allah bless him and grant him peace." Then he mentioned the hadith of the dabb (lizard) or the adabb.