Imam al-Shafi'i (may Allah have mercy on him) said: Sufyan al-Thawri went to the Commander of the Faithful. He was making himself appear mad, stroking the carpet and saying: How beautiful it is, how beautiful it is! For how much did you buy this? Then he began saying: Urine, urine! Until he got out, so that he might stay far from their affairs and remain safe.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب آداب القاضي / 20238