《北史·列传·卷七十四》
南清河郡以前做过贼的一百多个人，都充为苏琼的耳目，民间好事坏事，甚至连官吏们喝百姓一杯酒，苏琼无不立刻知道。
郡中旧贼一百余人，悉充左右，人间善恶及长吏饮人一杯酒，无不即知。
More than 100 people in Nanqinghe County who had been thieves before, were all hired as Su Qiong's spies. Su Qiong knew immediately about good and bad things among the people, even when officials drank a cup of wine with the people.