Explain the concept of "raiyat" and "under-raiyat" mentioned in the context.
In the context provided, "raiyat" and "under-raiyat" are mentioned in relation to an estate or land ownership. They refer to certain types of intermediary roles involved in the management of the estate or land, specifically in the context of Indian land revenue law.

A "raiyat" is a person who cultivates the land but does not own it. They possess rights over the land they cultivate and are responsible for paying land revenue to the state government.

An "under-raiyat" is a subordinate intermediary who assists or works under a raiyat in managing the estate or land. Their role may involve assisting the raiyat with various tasks related to cultivation, management, and payment of land revenue.