Why does a woman interrupt a man’s prayer?
Question

                Why is it that a woman interrupts a man's prayer if she passes in front of him?.
Praise be to Allah.Firstly: 
The Muslim has to accept the rulings of 
    sharee’ah, whether he understands the reasons behind them or not. 
Secondly: 
Women are not impure (naajis), but some of 
    the scholars said that the reason why a woman interrupts the prayer is that women are a temptation for men.  
Thirdly: 
There is a saheeh hadeeth in which the 
    Messenger of Allaah  (peace and blessings of Allaah be upon him) said that these three interrupt prayer if they pass in front of a praying man 
    if he has not placed an object to serve as a sutrah [screen], or if they pass between him and his sutrah. ( See question no.
    3404 ) . So we must accept and submit to the rulings of Allaah, and follow them. What is 
    meant by interrupting the prayer is that the prayer is rendered invalid, according to the more correct of the two scholarly opinions. 
And Allaah is the Source of strength. 
Al-Lajnah al-Daa’imah li’l-Buhooth 
    al-‘Ilmiyyah wa’l-Ifta’, 17/12.