that Messenger of Allah ﷺ forbade combining of four women in marriage: a woman with her father's sister, and a woman with her mother's sister.
أَنَّ رَسُولَ اللَّهِ ﷺ نَهَى عَنْ أَرْبَعِ نِسْوَةٍ أَنْ يُجْمَعَ بَيْنَهُنَّ الْمَرْأَةِ وَعَمَّتِهَا وَالْمَرْأَةِ وَخَالَتِهَا