The poem about throwing someone's ashes into drinking water

[Scythe]

I know I saw a poem on SS where the narrator asked that their cremated ashes be thrown into the drinking water of somewhere (I think Paris?) so that they can live on in another way when people drink the water that contains their ashes. I cannot find it anymore and would very much apperciate it if whoever knows about it can post it. I like that poem a lot.