Sahih al-Bukhari 2514

حَدَّثَنَا خَلاَّدُ بْنُ يَحْيَى، حَدَّثَنَا نَافِعُ بْنُ عُمَرَ، عَنِ ابْنِ أَبِي مُلَيْكَةَ، قَالَ كَتَبْتُ إِلَى ابْنِ عَبَّاسٍ فَكَتَبَ إِلَىَّ أَنَّ النَّبِيَّ صلى الله عليه وسلم قَضَى أَنَّ الْيَمِينَ عَلَى الْمُدَّعَى عَلَيْهِ‏.‏

Narrated Ibn Abu Mulaika:I wrote a letter to Ibn `Abbas and he wrote to me that the Prophet (ﷺ) had given the verdict that the defendant had to take an oath

Reference

Sahih al-Bukhari 2514

In-book

Book 48, Hadith 7

English

Muhsin Khan