United Kingdom, Oct. 13 -- William Shatner has revealed his kidney stone was auctioned off for Habitat For Humanity.

The 95-year-old Star Trek legend has recalled how a kidney stone he passed went up for auction in 2006 after being bought by a gambling company in Canada.

He told the Dropping Names with Brent and Jonny podcast: "I have a kidney stone, and the guy takes it out, here it is, a little black pellet. Thank God it's gone.

"A week later, I get a phone call from a Canadian gambling company who, by law, can't advertise. So what they do... they find ways of doing it."

The firm asked to by the kidney stone, and then "auctioned it off for $75,000".

The money from the auction was combined with funds raised by Shatner and his Boston...