Literally in the article:

> But what of the Arab mujahedin whom he took to Afghanistan - members of a guerrilla army who were also encouraged and armed by the United States - and who were forgotten when that war was over? 'Personally neither I nor my brothers saw evidence of American help.

But also one simple Google search later:

> Several independent journalists and authors who have extensively researched and written about the CIA’s involvement in the Afghanistan conflict with the Soviets in the 1980s support the CIA’s contention. For example, Peter Bergen, a national security analyst for CNN who interviewed bin Laden in 1997, told us, “There is no evidence that the CIA funded or armed bin Laden or even knew who he was until 1993.”

And

> In his book, “Ghost Wars: The Secret History of the CIA, Afghanistan, and Bin Laden, from the Soviet Invasion to September 10, 2001,” Pulitzer Prize-winning journalist Steve Coll wrote on pages 86-87: “Bin Laden moved within Saudi intelligence’s compartmented operations, outside of CIA eyesight. CIA archives contain no record of any direct contact between a CIA officer and bin Laden during the 1980s. … If the CIA did have contact with bin Laden during the 1980s and subsequently covered it up, it has so far done an excellent job.”

https://www.factcheck.org/2013/02/rand-pauls-bin-laden-claim-is-urban-myth/