Sahih al-Bukhari 2668

Arabic

حَدَّثَنَا أَبُو نُعَيْمٍ، حَدَّثَنَا نَافِعُ بْنُ عُمَرَ، عَنِ ابْنِ أَبِي مُلَيْكَةَ، قَالَ كَتَبَ ابْنُ عَبَّاسٍ ـ رضى الله عنهما ـ أَنَّ النَّبِيَّ صلى الله عليه وسلم قَضَى بِالْيَمِينِ عَلَى الْمُدَّعَى عَلَيْهِ‏.‏

English translation

Narrated Ibn Abu Mulaika:Ibn `Abbas wrote that the Prophet (ﷺ) gave his verdict on the basis of the defendant's oath

Reference: Sahih al-Bukhari 2668, Book of Witnesses. English translation by Dr. Muhammad Muhsin Khan.