What is ruling on women dealing with men (or vice versa) for business purpose? For example, buying goods in market etc. May Allah bless you.
The Scholars say this is allowed but within limitation. So you can deal with men while you are wearing your full hijab, no khulwa with a man, no softening of voice from a woman, no joking, and to limit the talking to the necessary.
Also the advice for women not to go to the markets and deal with men if they can avoid this and it is better that one of her mahram to undertake this responsibility as much as possible.