Bulugh al-Maram, Book 14, Hadith 1431 (English)

Narrated Ibn 'Umar (RA): The Prophet re-directed al-Yamin (the oath to be sword by the defendant) to the one making the claim to some right. [ad-Daraqutni reported the two aforesaid Ahadith, and there is weakness in their chain of narrators].

وَعَنِ ابْنِ عُمَرَ رَضِيَ اَللَّهُ عَنْهُمَا; { أَنَّ اَلنَّبِيَّ ‏- صلى الله عليه وسلم ‏-رَدَّ اَلْيَمِينَ عَلَى طَالِبِ اَلْحَقِّ } رَوَاهُمَا اَلدَّارَقُطْنِيُّ, وَفِي إِسْنَادِهِمَا ضَعْف ٌ 1‏.‏ ‏1 ‏- ضعيف.‏ رواه الدارقطني ( 4 / 213 )‏.‏ وقال الذهبي في "التلخيص" متعقبا الحاكم ( 4 / 100 )‏: "أخشى أن يكون الحديث باطلا".‏

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also referenced under: Book 14, Hadith 35 (In-Book)