How to retrieve shared iCloud Link

iOS offers to share pictures via iCloud Link. I hand-picked 15 photos and shared them with another iPhone user via iMessage. Now I'd like to share these 15 photos further with an Android user. I don’t know how to retrieve the previously created iCloud Link. In the Messages app, when I long-press and choose Copy, it only copies the selected picture. I'm looking for a way how to copy the iCloud Link to be able to further share all 15 pics. Is it possible to avoid hand-picking those 15 images again?