《搜神记·卷十三》
到东汉明帝的时候，西域的僧人来到洛阳。当时有人回想赵东方朔的话，就尝试用汉武帝时出现灰墨的事来问他。
至后汉明帝时，西域道人入来洛阳，时有忆方朔言者，乃试以武帝时灰墨问之。
During the Eastern Han Dynasty, a monk from the Western Regions came to Luoyang. At that time, someone recalled what Zhao Dongfang Shuo had said and tried to ask him about the gray ink that appeared in Emperor Wu's time.