But Sarai was barren; she had no child. Aben Ezra observes, there are some that say that Abraham was impotent, and not Sarai barren; the very reverse of the Scriptures; but as he rightly adds, his son Ishmael and his sons by Keturah show the contrary, see
Related Commentaries of Genesis 11:30
Genesis 11:30
30 But Sarai was barren; she had no child.