Mishkat al-Masabih 18 The Offices of Commander and Qadi كتاب الإمارة والقضاء 105

عَنْ عَمْرِو بْنِ شُعَيْبٍ عَنْ أَبِيهِ عَنْ جَدِّهِ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «الْبَيِّنَةُ عَلَى الْمُدَّعِي وَالْيَمِينُ عَلَى الْمُدَّعَى عَلَيْهِ» . رَوَاهُ التِّرْمِذِيّ

‘Amr b. Shu’aib, on his father’s authority, told that his grandfather reported the Prophet as saying, “Proof lies on the plaintiff and the oath is to be sworn by the defendant.” Tirmidhi transmitted it.