Amasla.

About Amasla

According to the Talmud, Amathlai was the name of the mother of Abraham. According to this tradition, she was the daughter of a man named Karnebo, and the wife of Terah, the father of Abraham. The name of Abraham's mother is not mentioned in the Hebrew Bible. She does not appear during the story of Abraham's birth, but is mentioned only when Abraham explains to Abimelech, king of Gerar, that Sarah is his sister on his father's side, but not on his mother's side.