《太平广记·卷三百七十八·再生四》
一天晚上，看到一个穿白衣的人来到他家，对刘宪说： 府官命你急速去应召。 
一夕，见一白衣来至其家，谓宪曰： 府僚命汝甚急，可疾赴召也。 
One night, he saw a man in white come to his house and say to Liu Xian, "The prefect has ordered you to answer an urgent summons."