Sufyan (may Allah have mercy on him) narrated from Abu Husayn (may Allah have mercy on him) that whenever a false witness was brought to Shurayh (may Allah have mercy on him), he would have him paraded around the market and the mosque and say: "We have declared this man's testimony void."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب آداب القاضي / 20497