Answered by Shaykh Ilyas Patel
Can a man and woman pray in one line?
Answer:
A woman should stand behind the man if they are praying together.
Imam Shurunbulali said in Maraqi’l-Falah:
One person [whether it is a man or understanding child] will stand on the right of the imam [as for one woman she will stand behind.
(Allama Hasan Shurunbulali, Maraqi’l-Falah pg 247)
He also mentions further on as follows:
As for a woman she has to stay and pray behind
(Allama Hasan Shurunbulali, Maraqi’l-Falah pg249)
– Ilyas