No Salary Paid

I was into family business for ten years and there was no salary paid for me.Earlier I worked in software tier1 companies for few years.Now I want to go back to MNC software companies.
What should I do when i attend interviews and asked for salary slips?
I have already posted this question in a different section Job seekers sec. But no one answered . So is this right to repost it in this group. If not guide me.Thanks

If you had worked 10 years continuously without salary. i think do not need salary slip. you should present your self ,. you did work for butter and bread.
Regards