Musnad Ahmad 1144:1

Muhammad ibn Ja‘far narrated to us, Shu‘bah narrated to us, from al-Hakam, from Zayd ibn Wahb, from al-Bara’ ibn ‘Azib, from Thabit ibn Wadi‘ah: That a dabb (lizard) was brought to the Prophet, peace and blessings of Allah be upon him, and he said: "A nation that was transformed, and Allah knows best."