Paul McCartney believes he "saw God" while under the influence of drugs during the height of Beatlemania and he added that the experience is a "clue" to his spirituality. 

On the occasion in question, the musician took the hallucinogen dimethyltryptamine (DMT). "There was the gallery owner Robert Fraser, me, a couple of others," the musician told The Sunday Times.

"We were immediately nailed to the sofa. And I saw God, this amazing towering thing, and I was humbled. And what I’m saying is, that moment didn’t turn my life around, but it was a clue.

McCartney: "We were immediately nailed to the sofa. And I saw God."

"It was huge. A massive wall that I couldn’t see the top of, and I was at the bottom. And anybody else would say it’s just the drug, the hallucination, but both Robert and I were, like, ‘Did you see that?’ We felt we had seen a higher thing."

He also believes that he made contact with his deceased wife Linda, who passed away in 1998.

"I was in the country once, and I saw a white squirrel. So, this was Linda, come back to give me a sign. … It was a great moment. It thrilled me. Goosebumps! Obviously, I have no proof it was her at all, but it was good for me to think that."

McCartney’s new album, Egypt Station, is released on September 7.