In Saliputra, there lived two men of the washerman caste, father and son, who made their living by washing clothes. One day, a yogin came along and begged food from them. They gave alms to him and also asked if they could wash his clothes. The yogin then replied there is no good to him to wear clothes cleansed only by an external washing if he do not purify the stains of the three inner poisons. The two men then asked for instructions at which the yogin initiated them into Cakrasamvara and gave them the instructions, and blessed them with mantras, mudras, and samadhis. They meditated for 12 years, purifying their bodies by mudras, their speech by mantras, and the stains of their minds by Samadhi.
Having meditated on the mind as inseparable from the Developing and Perfecting Stages, they purified body, speech and mind. When they attained the siddhi of Mahamudra, the clothes were cleansed by themselves without the men having to wash them. When the people saw this, they realized that the washermen had perfected these qualities. The two men worked for the benefit of sentient beings, and after 100 years, went to the realm of the Dakas.