What does the nineth amendment say that gives rights to the people?

Amendment IX (1791)

The enumeration of the Constitution, of certain rights, shall not be construed to deny or disparage others retained by the people.

The 9th Amendment is saying that the Constitution cannot be used against the peoples' right to freedom. The rights granted by the Constitution cannot be used to eliminate other rights.

Breakdown:

The enumeration of the Constitution, of certain rights = The rights outlined in the Constitution.

Shall not be construed = can not be used.

to deny or disparage = to stop or infringe upon.

others = other rights.

retained by the people = that the people have.