عَنِ ابْنِ عَبَّاسٍ رَضِيَ اللَّهُ عَنْهُمَا عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «لَوْ يُعْطَى النَّاسُ بِدَعْوَاهُمْ لَادَّعَى نَاسٌ دِمَاءَ رِجَالٍ وَأَمْوَالَهُمْ وَلَكِنَّ الْيَمِينَ عَلَى الْمُدَّعَى عَلَيْهِ» . رَوَاهُ مُسْلِمٌ وَفِي «شَرْحِهِ لِلنَّوَوِيِّ» أَنَّهُ قَالَ: وَجَاءَ فِي رِوَايَةِ «الْبَيْهَقِيِّ» بِإِسْنَادٍ حَسَنٍ أَوْ صَحِيحٍ زِيَادَةٌ عَنِ ابْنِ عَبَّاسٍ مَرْفُوعًا: «لَكِنَّ الْبَيِّنَةَ على المدَّعي واليمينَ على مَنْ أنكر»

Umm Salama reported God’s Messenger as saying, “I am only a human being and you bring your disputes to me, some perhaps being more eloquent in their plea than others, so that I give judgment on their behalf according to what I hear from them. Therefore whatever I decide for anyone which by right belongs to his brother he must not take, for I am granting him only a portion of hell.” (Bukhari and Muslim.)