Sahih Muslim
The Book of Games and the Animals which May be Slaughtered and the Aninals that Are to be Eaten (Kitab-us-Said wal-Dhabaih wa ma Yukalu min Al-Hayawan)
Book Number: 021 / Hadith Number: 4788
Ibn 'Umar reported that there were some persons with Allah's Apostle (may peace be upon him) from among his Companions, Sa'd being one of them. There was brought to them the flesh of the lizard when a lady amongst the wives of Allah's Apostle (may peace be upon him) said: It is the flesh of the lizard. Thereupon Allah's Messenger (way peace be upon him) &aid: Eat, for it is lawful, but it is not my diet.