The three Ka^/syapa brothers: Uruvilva^-Ka^/syapa 优楼频螺迦叶， Nadi^-Ka^/syapa 那提迦叶 and Gaya^-Ka^/syapa 伽耶迦叶. Originally they had been priests of the fire-sacrifice， with over a thousand disciples. When they were converted by S/a^kyamuni， they brought their followers with them. They were later instrumental in the organization of the Buddhist sangha.