Muhammad bin Sirin (may Allah have mercy on him) narrates from Qadi Shurayh (may Allah have mercy on him): "Whoever claims against a judgment of mine, the burden is on him until he brings proof. The truth has more right than my judgment, and the truth has more right than a false oath."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الشهادات / 20731