It is narrated from Umm Salamah (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) said: "Indeed, I am only a human being like you, and you bring your disputes to me. It may be that some of you are more eloquent in presenting their case than others, so I judge in their favor based on what I hear. So, if I judge in someone's favor at the expense of his brother's right, then he should not take it, for in that case I am allotting for him a piece of the Hellfire."
Hadith Referenceمسند الإمام الشافعي / كتاب القضاء والأحكام والدعاوى والبينات واليمين ومع الشاهد والأيمان والشهادات / 1690