Abd-Rabou will join the Saudi club until the end of the season after agreeing to give up on his late dues, estimated to be EGP 5million.
The 27-year-old admitted recently that the uncertainty around football in Egypt was a reason behind his decision.
After signing a mega deal with Ismaili last year, Abd-Rabou became tied with the coastal club until 2015.
Interview with Abd-Rabou on Dream TV