to abide by

[euncu]

There are some certain rules to abide by,
or
There are some certain rules to be abided by,

I can't tell which one is correct so I'd appreciate if you clarify.

Thanks in advance.

[5jj]

There are some certain rules to abide by.
There are some certain rules to abide by.

The passive is possible, though not common: Some/certain rules must be abided by.