Ohr wasn't the only one to give the FBI the dossier
"Bruce Ohr's wife, Nellie Ohr, worked for Fusion GPS – which was the firm hired by the Clinton campaign to write the dossier. Bruce Ohr gave the dossier to the FBI. The FBI then used the same dossier to spy on the Trump campaign."
— PolitiFact North Carolina
on Tuesday, September 11th, 2018