Shri Ram and Laxman had a battle with Viraadh which lasted for a long period. All their clothes and weapons were fully crumpled and stained with blood after they killed him. There is a large water body (Pushkarani) between Tikariya and Markundi in which they had washed their clothes and weapons.Â
Valmiki Ramayana 3/4/5 to 12 as per situation.