《新唐书·列传·卷一百四十七》
这时德宗初即位，珍禽奇兽全放生了，蛮夷所献的驯象畜养在苑中，元会时有三十二头充任廷卫，这时也全放到荆山之南。
是时，德宗初即位，珍禽奇兽悉纵之，蛮夷所献驯象畜苑中，元会充廷者凡三十二，悉放荆山之阳。
At this time, Dezong had just ascended to the throne. All the rare birds and strange beasts were released. The tame elephants offered by the barbarians were kept in the park. During the Yuanhui period, thirty-two served as court guards, and at this time they were all to the south of Jingshan.