@thegoatrider
you sure ?
i would think it's more likely to be
"The golden calf" if its a event reward with healing abilites.
And that is "only " 1500 BC or so.
Bull statues have been pretty common all around history tho, but its usually not in relation with healing.
It's usually fertility/virility, but general health is not too uncommon.
Really it could be just about anything unless the manga/novel describes it so it tells us what it actually is.