From Sahih Muslim (Hadith 5036):
Khalid b. Walid reported that he visited Maimuna daughter of al-Harith with the Messenger of Allah (ﷺ), and she was the sister of his mother. She presented to Allah's Messenger (ﷺ) the flesh of a lizard which Umm Hufaid daughter of al-Harith had brought from Najd, and she had been married to a person belonging to Banu Ja'far. It was the habit of Allah's Messenger (ﷺ) not to eat anything until he knew what that was. The rest of the hadith is the same but with this (addition):" Ibn al-Asamm narrated it from Maimuna and he was under her care
Reference: Muslim 5036