Complex sentence: When this astra is used for offensive purpose nothing can stop or escape from it.In some texts it is called Brahma-dhanda astra, the weapon created by Saptarishi's to counter any weapon ever created, even that of Trimurti's.
Split into simpler sentences: When this astra is used for offensive purposes, nothing can stop or escape from it. The weapon was created by Saptarishi's to counter any weapon ever created, even that of Trimurti's.