Musannaf Ibn Abi Shayba 35:441

Waki’ narrated to us, from Usama bin Zayd, from Abdullah bin Rafi’, from Umm Salama, who said: Two men from the Ansar came disputing before the Messenger of Allah (peace and blessings of Allah be upon him) regarding inheritances between them that had become worn out, and there was no evidence between them. The Messenger of Allah (peace and blessings of Allah be upon him) said: "You are disputing before me, and I am only a human being. It may be that some of you are more eloquent in their argument than others, and I only judge between you according to what I hear from you. So, whoever I judge in his favor regarding any of his brother's right, let him not take it, for I am only cutting out for him a piece of the Fire, which he will bring as a yoke around his neck on the Day of Resurrection." The two men wept, and each of them said: "My right is for my brother, O Messenger of Allah." The Messenger of Allah (peace and blessings of Allah be upon him) said: "Since you have done that, then go and divide it, and aim for the truth, then let each of you absolve the other."