Hadith.3394 - Al-Bazanti narrated from Dawood ibn Sirhan, who said that Abu Abdillah (as) said
"In the case of two men who testified against another man regarding a matter, and then two others came and testified to something different from what the first two had testified-lots are drawn between them. Whichever group's lot is drawn, they shall take an oath, and their testimony will have precedence in judgment."