There are many laws, acts etc., related to people, whose official religion is Hinduism in India.
Suppose, in scriptures, it is allowed to marry multiple ladies simultaneously. But, current Hindus in India cannot implement it due to Hindu marriage act.
Similarly, there may be many similarities or differences from scriptures to contemporary society.
Is it allowed to ask contemporary rules of Hindu people in India? If not, what is the reason for disallowing it?