It is said that when Shakyamuni preached, a thousand lights and a thousand kebutsu appeared from Shakyamuni's byakugo (whorl of hair in the centre of the forehead of Buddha), which has been often adopted as a subject of Buddhist paintings.
釈尊が説法を説いた際に、白毫から一千の光明と一千の化仏が現れたとされ、仏画の題材にもされる。