The pebbles in the quiver

Explanation

Phylarchus says that the Scythians, going to bed, would carry their quiver, and if they had passed that day painlessly, would put a white pebble into it; if vexed, a black. So at the death of any of them they would bring out the quiver and count the pebbles; and if the white were found more, they would call the deceased blessed. Hence it is said proverbially, our happy day being said to be one of those "from the quiver." And Menander says in Leucadia that the good day is called "white."