The widow had a cow, and her stepson had a donkey. The stepson constantly stole food from the cow and gave it to the donkey.
And the widow prayed to God with a request to put to death the donkey. But instead of a donkey, a cow died. The widow, in tears, turned to God again, saying: “Oh Lord, do you really not distinguish a donkey from a cow?”
Is a parable of Vardan Aygektsi.
P.S Judging by this image of this Sevan khachkar (Cross Stone), both the donkey and the cow died.