《资治通鉴·唐纪·唐纪六十七》
丁未，庞勋从丰县出发，庚戌，贼军到达萧县，约请襄城、留武、小睢诸营寨的贼军来会合，有众五六万人，定于二十九日天刚亮时进攻柳子。
丁未，发丰县，庚戌，至萧。约襄城、留武、小睢诸寨兵合五六万人，以二十九日迟明攻柳子。
Ding Wei, Pang Xun set off from Fengxian, Gengxu, the rebel army arrived in Xiao County, and invited the rebel camps of Xiangcheng, Liuwu, and Xiaosui to meet up. There were about 50,000 or 60,000 people, and it was decided to attack Liuzhi at dawn on the 29th.