《资治通鉴·汉纪·汉纪三十三》
至于灵验的预兆，瑞符的应验，这种事很多。所以韩信、张良认为是上天授予，而不是由于人的力量。
若乃灵瑞符应，其事甚众，故淮阴、留侯谓之天授，非人力也。
As for the effective omens, the fulfillment of auspicious symbols, there are many such things. Therefore, Han Xin and Zhang Liang believed that it was bestowed by heaven, not by human power.