Oberman, Anthony – Twee ruiters in een landschap, 1817 Rijksmuseum: part 4

The picture has something of this: cavalry, mammal, seated, horse, grass, two, equestrian, man, outdoors, hayfield, livestock, freedom, people, pasture, farm, mare, grassland, cowman.
Perhaps it’s a painting of a man riding on the back of a white horse next to a man standing.