There is an error in this sutta. The current version says that the piece of cloth will wear down before a kalpa, which is not a lot of time. It should say that the rock will wear down.
This:
Entonces, es más probable que aquella pieza de tela se desgastase o eliminase antes de un eón llegase a su fin.
Should be:
Entonces, es más probable que aquella roca se desgastase o eliminase antes de un eón llegase a su fin.
Thank you.