Genesis 21:8-10

Hagar and Ishmael Sent Away 8The child grew and was weaned, and on the day Isaac was weaned Abraham held a great feast. 9But Sarah saw that the son whom Hagar the Egyptian had borne to Abraham was mocking,

10and she said to Abraham, “Get rid of that slave woman and her son, for that woman’s son will never share in the inheritance with my son Isaac.”