Musannaf Ibn Abi Shaybah

Hazrat Uqbah bin Fakah says that I went to Hazrat Zaid bin Thabit at midday. I sought permission to enter, so he came out wearing an izar and holding a staff in his hand. I asked, "What are you doing at this time?" He replied, "I am searching for that animal, the killing of which Allah writes one good deed and forgives one sin. Kill it." And that animal is the lizard.