Os, Pieter Gerardus van – Landschap met vee, 1816 Rijksmuseum: part 2

The picture has something of this: mammal, cattle, livestock, cow, agriculture, pastoral, outdoors, herd, grassland, landscape, farm, cavalry, grass, countryside, group, rural, hayfield, pasture, herder.
Perhaps it’s a painting of a herd of cattle in a field with a man on a horse in the background and a man.