"beyond" vs. "beyond of"

[Rilwen]

I often hear "It's beyond of my mind." but also "It's beyond my comprehension." I understand both are correct. Is there any rule for using "beyond of" and just "beyond"?
Thanks.

 

[5jj]

I often hear "It's beyond of my mind." but also "It's beyond my comprehension." I understand both are correct. Is there any rule for using "beyond of" and just "beyond"?

The first utterance is not acceptable. 'Beyond of' is wrong.

 

[SoothingDave]

"It's beyond of my mind" is not correct.