The place where a woman stands when she prays with a mahram

Question:
If a woman prays with a man who is her mahram, is it better for her to pray alone? And is it permissible for her to stand to his right?

Answer:
A woman, in all cases, stands behind the man, whether he is her husband or one of her other mahrams; she stands behind him. The Prophet (peace and blessings be upon him) prayed with Anas, with Anas to his right, and Umm Sulaym behind them. On another occasion, he prayed with Anas and an orphan in one row, and an old woman behind them. So the Sunnah is for the woman to stand behind the worshippers, even if they are her mahrams; she stands behind him. This is the Sunnah.