The Prophet ﷺ said, "A woman is not to be married while her Amtah is still married to the same man, nor while her maternal aunt is."
حدثنا يحيى عن هشام عن محمد
عن النبي ﷺ قال لا تنكح المرأة على عمتها ولا على خالتها
Its chain of transmission is sahih, it has passed at 2/401-423-425.