Genesis 21:10-12

YLT(i) 10 and she saith to Abraham, `Cast out this handmaid and her son; for the son of this handmaid hath no possession with my son—with Isaac.' 11 And the thing is very wrong in the eyes of Abraham, for his son's sake; 12 and God saith unto Abraham, `Let it not be wrong in thine eyes because of the youth, and because of thy handmaid: all that Sarah saith unto thee—hearken to her voice, for in Isaac is a seed called to thee.