Musnad Ahmad 31:435

'Abd al-Samad narrated to us, Hammam narrated to us, Qatadah narrated to us, from Abu Nadrah, from Abu Sa'id al-Khudri, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Two tribes from the Children of Israel went astray, and I fear that they may be the lizards (al-dhibab)."