did a filter and oil change on the cossie the other day then took it round the block and parked back up and left it on the drive,thought all was well but had alook under the sump and i could see oil had leaked onto the drive

so come to conclusion that sump nut or seal may be knackered so bought a new sump plug and fitted that today so hope that sorts it.Had to drain new oil into clean container so i could fill back up once new plug fitted but after pouring oil back into engine at the bottom of the container i noticed small metal fragments

that looked like nail clippings!
what does this signal?? anyone had this?