《太平广记·卷二百二十四·相四》
后来，玄宗皇帝离开潞州，文武百官和亲朋故友都来送行，唯独不见姜皎，玄宗皇帝有些不高兴。
后上皇出潞府，百官亲旧尽送，唯不见姜。上皇怪之。
<translation>Later, when Emperor Xuanzong left Luzhou, all the civil and military officials and relatives and friends came to send him off, but Jiang Jiao was nowhere to be seen. Emperor Xuanzong was a little unhappy.</translation>