Kansas City, Mo. ? A police officer who received $8 payback from a stranger he helped in 1988 is so inspired that he’s appealing for donations to a Kansas City homeless shelter.

Overland Park police Sgt. Dan Carney unveiled his plan Thursday to help raise money for the City Union Mission. Twenty-one years ago, Carney came across a motorcyclist passing through town, out of gas and broke. He gave him $8, all the money he had on him.

But recently the man on the motorcycle found Carney’s business card in a drawer and sent him the $8. Now Carney is asking for $8 donations to the City Union Mission as part of his plan called “Give 8 Ask 8.”