Saudi Arabia has long been considered the primary source of al Qaeda funding, but we have found no evidence that the Saudi government as an institution or senior Saudi officials individually funded the organization. . . . Our investigation has uncovered no credible evidence that any person in the United States gave the hijackers substantial financial assistance.

The 9/11 Commission Report

Finding: While in the United States, some of the September 11 hijackers were in contact with, and received support or assistance from, individuals who may be connected to the Saudi Government. . . . Neither CIA nor FBI witnesses were able to identify definitively the extent of Saudi support for terrorist activity globally or within the United States.

Report of the Congressional Joint Inquiry into the Terrorist Attacks of September 11, 2001—Redacted Pages

Declassified FBI report detailing the fleeing from Florida of a wealthy Saudi family with ties to the 9/11 terrorists, courtesy of the Florida Bulldog (FloridaBulldog.org)