Musnad Ahmad 27:434

'Abd al-Razzaq narrated to us, Ma'mar narrated to us, from Ayyub, from Nafi', from Ibn 'Umar, and 'Ubayd Allah, from Nafi', from Ibn 'Umar, who said: The Prophet, peace and blessings of Allah be upon him, was asked about the dabb (spiny-tailed lizard), and he said: "I am not one who eats it, nor am I one who forbids it."