Mausala Parva, the Book of the Clubs, delivers the fulfillment of Gandhari's curse from many years and several books earlier: Krishna's own Yadava clan, prosperous and seemingly secure at their capital of Dvaraka, descends into moral decay, drunkenness and internal quarreling until, at a festival gathering, a brawl breaks out among the clan's own warriors that escalates uncontrollably, the men, lacking other weapons, tearing up reeds growing on the shore that, by an earlier curse, turn to iron clubs in their hands, and the entire Yadava warrior class annihilates itself in a single chaotic massacre.
Krishna, having foreseen and in some tellings deliberately allowed this outcome, retreats alone into the forest afterward and is killed almost incidentally, shot in the foot, his one vulnerable point, by a hunter named Jara who mistakes him from a distance for a deer, an unceremonious death for a figure the epic elsewhere treats as a full manifestation of the divine. Arjuna arrives soon after to find Dvaraka already sinking beneath the sea and the city's surviving women and children in his sole charge, only to discover on the journey home that his once-legendary martial skill has, without explanation the text offers directly, simply left him, unable even to defend the group from bandits.