Kulthum bin Ziyad (may Allah have mercy on him) said: I saw Sulayman bin Habib (may Allah have mercy on him) and al-Zuhri (may Allah have mercy on him), both of them judging by an oath and a witness. Kulthum (may Allah have mercy on him) said: Sulayman bin Habib (may Allah have mercy on him) was the judge of Madinah for thirty years, and he kept judging by an oath and a witness.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الشهادات / 20689