Midrasz do Rodzaju 27:44

Another interpretation (of Gen. 29:31): WHEN THE LORD SAW THAT LEAH WAS HATED. < She was hated >, not because she was abhorrent to her husband, but because she had scolded him when Jacob had worked seven years for Rachel. Now his mother had said to him (in Gen. 27:44): AND YOU ARE TO STAY WITH HIM (Laban) FOR A WHILE, and he had stayed seven years. (Gen. 29:21, 23:) THEN JACOB SAID UNTO LABAN: GIVE ME MY WIFE…. AND, WHEN IT WAS EVENING, HE TOOK HIS DAUGHTER LEAH < AND BROUGHT HER TO HIM >. ALL NIGHT SHE PRETENDED TO BE RACHEL. When he arose in the morning (according to Gen. 29:25), THERE WAS LEAH. He said to her: Daughter of a swindler, why did you trick me? She said to him: < What about > you! Why did you trick your father? When he said to you: Is this my son Esau, you said to him (in Gen. 27:19): I AM ESAU YOUR FIRST-BORN. Now you are saying: Why have you tricked me? And did your father not say < to Esau > (in Gen. 27:35): YOUR BROTHER CAME WITH DECEIT? So because of these things with which she scolded him, he began to hate her. The Holy One said: There is no cure for this but sons. Then her husband will desire her. Thus (in Gen. 29:31): WHEN THE LORD SAW THAT LEAH WAS HATED, HE OPENED HER WOMB. David also gives praise (in Ps. 146:7): THE ONE WHO EXECUTES JUSTICE FOR THE OPPRESSED.³³Gen. R. 71:2.