FYI, The movie was made right after a tournament called "Over the Top" which included somne of the best in the world, including John Brznk and Allen Fisher, who actually showed Sly how to top-roll (the actual move of over the top)
Men are not responsible for the sins of his wife and vice versa. The hijab and other Muslim garments are actually meant more to keep men from sinning by engaging in lustful thoughts or actions than anything else. They are worn actually to give women and men a more even playing field so men aren't focused on a women's curves or other feminine qualities and instead listens to what she says and gets to know her in more ways than physically.
That's the reason some men require them. To keep him from sinning, not to keep his wife from sinning.
That makes sense. I don't know his motivations for asking that she wear it. I guess by required I should have said he suggested it strongly as something she should do. IDR really...