Genesis 16:5

חמסי עליך MY WRONG BE UPON THEE — The wrong done to me (חמסי)— the punishment for it I call down on you (עליך). “When you prayed to the Holy One, blessed be He, (15:2) ‘what wilt Thou give me, seeing that I go childless’, you prayed only on behalf of yourself whereas you should have prayed on behalf of both of us — then would I have been borne in mind (by God) together with you” (i.e. when you had the gift of a child it would have been “my” child also — not that of a strange woman). Besides this, you deprive me (חומס) of your protecting words since you hear how I am despised and yet you keep silent (Genesis Rabbah 45:5). 'אנכי נתתי שפחתי וגו ביני וביניך I HAVE GIVEN MY HANDMAID etc… [MAY THE LORD JUDGE] BETWEEN ME AND THEE — Wherever this word “between thee” (masc.) occurs in Scripture it is written defective (i.e. without the second yod) whilst here it is written plene, therefore read it as וּבֵינָיִךְ (the fem form that corresponds to ביניך in our text — as though Sarah turned to Hagar saying “May God judge between me and thee”). Thus she cast the evil eye on Hagar so that she miscarried on this occasion. This explains what the angel said to Hagar, (16:11) הנך הרה “behold, thou wilt conceive”; but had she not already conceived and yet he announces to her that she would conceive? This therefore informs us that she miscarried in this, her first conception (cf. verse 11) (Genesis Rabbah 45:5).

וַתֹּ֨אמֶר שָׂרַ֣י אֶל־אַבְרָם֮ חֲמָסִ֣י עָלֶ֒יךָ֒ אָנֹכִ֗י נָתַ֤תִּי שִׁפְחָתִי֙ בְּחֵיקֶ֔ךָ וַתֵּ֙רֶא֙ כִּ֣י הָרָ֔תָה וָאֵקַ֖ל בְּעֵינֶ֑יהָ יִשְׁפֹּ֥ט יְהֹוָ֖ה בֵּינִ֥י וּבֵינֶֽיׄךָ׃

And Saray said to Avram, My wrong be upon thee: I have given my maid into thy bosom; and when she saw that she had conceived, I was despised in her eyes: the Lord judge between me and thee.