YOU SAID:

I told him not to reject him.

INTO JAPANESE

私は彼を拒否しないように彼に言った。

BACK INTO ENGLISH

I do not deny that he told him.

INTO JAPANESE

私は彼が彼に言ったことを否定しません。

BACK INTO ENGLISH

I told him that he does not deny.

INTO JAPANESE

私は彼に言った彼は否定しません。

BACK INTO ENGLISH

I told him that he does not deny.