What is the story of Lord Vishnu holding Trishula and Lord Shiva holding Sudarshana Chakra?

What is the story of Lord Vishnu holding Trishula and Lord Shiva holding Sudarshana Chakra? Once Narada asked sage Pulastya why Lord Vishnu and Shiva exchanged their weapons. Sage Pulastya recited the story that was once told by Lord Vishnu to Manu. In ancient times, there was a demon king named Jalodbhava. Jalodbhava pleased Lord Brahma with his penance and got a boon that specific weapons of gods will fail against him, sages cannot curse him, fire and water cannot harm him. Having obtained these boons, Jalodbhava started to rule entire earth out of cruelty. The gods took birth on earth and and then took Jalodbhava to Vaikunta. Lord Vishnu then went with Jalodbhava and the gods to Kailasa. A meeting was held there on the strategy to kill this demon. Lord Vishnu and Lord Shiva exchanged their weapons immediately since Jalodbhava had a boon that gods cannot use their specific weapons to kill him. When Jalodbhava saw the two gods marching towards him, he immediately escaped from the place and went to bottom of a river. When Lord Vishnu and Shiva saw the demon hiding under river, they both hide them on both banks of that river. Jalodbhava came out of the water thinking that both Lord Vishnu and Shiva might have gone from there. Jalodbhava, with fear started looking on all sides and then decided to climb Himalaya. Lord Vishnu with trident and Lord Shiva with Sudharshana rushed towards the demon when they saw him climbing the mountain. Lord Vishnu threw the trident and Lord Shiva released the Sudharshana simultaneously towards Jalodbhava. Jalodbhava who was having golden complexion fell down from the mountain like a white star falling from the sky. Narada said- kindly, tell me that why had Śiva held Sudarśana and Vasudeva the Śula there? There was one mighty king of demons called Jalodbhava (water-bom). That mighty demon worshipped god Brahma with observing terrific penance. Brahma pleased and endowed him with powers defeating all gods and demons. It was said that the specific weapons of gods too shall fail to put any harm to him. The curse thundered by hermits known to Brahma shall even prove futile and the fire and water shall do not harm to him. That demon having these specific powers then began ruling on earth. He put in pain all gods, hermits and kings too. That cruel demon had destroyed all benevolent activities. The gods then took birth on the earth took the kings in their company and went to the supreme regulating authority god Visnu. God too went With them at Himalaya where Hara was existed. A meeting arranged there and strategy stated for killing that enemy as it was only benevolent project for gods and hermits. Both gods then exchanged their weapons immediately. When that wicked demon saw the god of gods Sankara and Visnu marching forward of attack, considering them undefeated. The demon entered into the bottom of river with a fright. When Saiikara and Visnu saw the demon hidden in huge and holy river Madhumafi, they suddenly hide on the both banks of that river. Jalodbhava came up from the water considering Satikara and Visnu returned till then. He cautiously started looking all sides with fear and thus, climbed on the ridge of inaccessible Himñlaya. Visnu with trident and Satikara with discus rushed fast towards every when they saw him climbing on the ridge of the mountain. They hit hard on his body by throwing discus and trident simultaneously. That demon having golden complexion fell down from the mountain like a white star falling from the sky. Visnu had thus, held trident while Saiikara had held discus for killing their enemy Jalodbhida. The foot print of Siva on Himilaya began emanating the river Vitasta just then.