An-Nawawi's 40 Hadith 33
الأربعون النووية#33Not gradedعَنْ ابْنِ عَبَّاسٍ رَضِيَ اللَّهُ عَنْهُمَا أَنَّ رَسُولَ اللَّهِ صلى الله عليه و سلم قَالَ: "لَوْ يُعْطَى النَّاسُ بِدَعْوَاهُمْ لَادَّعَى رِجَالٌ أَمْوَالَ قَوْمٍ وَدِمَاءَهُمْ، لَكِنَّ الْبَيِّنَةَ عَلَى الْمُدَّعِي، وَالْيَمِينَ عَلَى مَنْ أَنْكَرَ" . حَدِيثٌ حَسَنٌ، رَوَاهُ الْبَيْهَقِيّ [في"السنن" 10/252]، وَغَيْرُهُ هَكَذَا، وَبَعْضُهُ فِي "الصَّحِيحَيْنِ
On the authority of Ibn Abbas (may Allah be pleased with him), that the Messenger of Allah (peace and blessings of Allah be upon him) said: Were people to be given everything that they claimed, men would [unjustly] claim the wealth and lives of [other] people. But, the onus of proof is upon the claimant, and the taking of an oath is upon him who denies. A hasan hadeeth narrated by al-Baihaqee and others in this form, and part of it is in the two Saheehs
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Our source carries no per-scholar grade for this narration. Please verify on Sunnah.com or with a qualified scholar before relying on it.
In-book reference: 1:33