The adage "Ekencrkkึgnpoeka" means working hard. Beyond their capabilities He likened them like ancient rolling cart or push the mortar. Which is pretty much the water Give up the mountain with a height. It is difficult and harder.
The proverb "out of a stone." refers to the hard work beyond their capabilities. You can compare them like ancient wheel, roll, or pressure mortar which has water love. Give up going on the mountain, which has height.