'Laws' in the Bible

"If it please the king, let a royal commandment go from him, and let it be written among the laws of the Persians and the Medes, so that it cannot be altered, that Vashti may never again come before King Ahasuerus; and let the king give her royal estate to another who is better than she.

Haman said to King Ahasuerus, "There is a certain people scattered abroad and dispersed among the peoples in all the provinces of your kingdom, and their laws are different than other people's. They don't keep the king's laws. Therefore it is not for the king's profit to allow them to remain.