《资治通鉴·唐纪·唐纪三十七》
史思明有良马一千多匹，每天都出来在黄河南岸的沙洲上洗浴，往复不停，以显示马多。
思明有良马千馀匹，每日出于河南渚浴之，循环不休以示多。
Shi Siming had more than a thousand fine horses, and every day he would come out to bathe on the sandbars on the south bank of the Yellow River, going back and forth endlessly to show off his many horses.