《资治通鉴·唐纪·唐纪二十五》
将近二更时，夜空的流星散落如雪，刘幽求说道： 天意如此，机不可失！ 
向二鼓，天星散落如雪，刘幽求曰： 天意如此，时不可失！ 
When it was approaching the second watch, the meteors in the night sky fell like snow, and Liu Youqiu said: "This is the will of Heaven, the opportunity must not be lost!"