The Treasure and Pearl

If the field with the treasure and pearl were of such value, it might have been more like God's kingdom had the finder told the current owner what he had overlooked rather than taking it from him, but then it is not an analogy and so there is no need to wonder did the finder later share it.  Were it to be like the kingdom it could not be just enshrined and admired.  It had to be offered or used in some way.  Like the yeast enlivening dough, it would have to increase what surrounded and of which it was a part.  To be unused, to not grow would make it an ornament rather than a treasure.  Were that the case, it would be better left for a more appreciative finder.