In 19BBY, after Darth Vader had killed Kira Kanfila and claimed his lightsaber for himself, Darth Sidious trained and sparred with his apprentice in the works District on Coruscant. As the two Sith began their training, Sidious easily disarmed Vader, took his lightsaber, and chided his apprentice for fighting like a Jedi and for fighting as if his lightsaber were his only weapon. According to Sidious, the Sith's weapon is not the lightsaber, but rather the dark side since the dark side touches everything. Thus, everything can be used as a weapon for the Sith to wield and crushing their opponents, while using the Forsterhirl surrounding objects of Vader, Sidious explained that for the Sith. The lightsaber is merely a symbol signifying the great blaze of the dark side that consumes all who come against it, and as a defeated Vader knelt before his master with a lightsaber to his throat, the apprentice informed his master that he understood the lesson being imparted on him.