According to Snorri Sturluson, Odin decreed that when someone died and travelled to Valhalla, he could take not just what he had with him on his funeral pyre, but also what he had hidden in the ground . In other words, if you were about to go into battle, burying all your silver in a hole in the ground didn’t just have the benefit of making sure it was there when you returned if you were successful, it would also let you bring it to the afterlife, should that be the outcome.