《资治通鉴·晋纪·晋纪三十》
后燕有一个占卜算卦的术士，叫靳安。他对后燕太子慕容宝说： 现在天时对我们很不利，我们一定要大败，如果赶快撤退，可以免去这场大难。 
燕术士靳安言於太子宝曰： 天时不利，燕必大败，速去可免。 
Later Yan had a fortune teller called Jin An. He told Crown Prince Murong Bao of Later Yan: “The heavens are not in our favor now, we are bound to suffer a great defeat, if we withdraw immediately we can avoid this calamity.”