The whole discussion and theories about black holes involve mass and it's effect on time or spacetime (Space and time are two parts of one whole).

A black hole's mass compresses and that bends time or spacetime. It is believed that at the center of the black hole, or the singularity as they call it, there is no space or time. Or it is so tiny it is practically incalculable.

I also believe they say that as you travel past the event horizon of a black hole, you will be pulled forward in time.

So yes, there is most definitely a relationship between mass and time or spacetime.

Am I wrong?