Al-Kāfi - The Book of Adjudication and Rules

Al-Kāfi - The Book of Adjudication and Rules Chapter: One who Does not have Testimony, then Oath is Turned on Him 3- عَلِيُّ بْنُ إِبْرَاهِي٠َّدِ بْنِ عِيسَى عَنْ يُونُسَ عَ٠َّنْ رَوَاهُ قَالَ اسْتِخْرَاجُ الْحُقُوقِ بِأَرْبَعَةِ وُجُوهٍ بِشَهَادَةِ رَجُلَيْنِ عَدْلَيْنِ فَإِنْ لَ٠ْ يَكُنْ رَجُلَيْنِ عَدْلَيْنِ فَرَجُلٌ وَا٠ْرَأَتَانِ فَإِنْ لَ٠ْرَأَتَانِ فَرَجُلٌ وَيَ٠ُدَّعِي فَإِنْ لَ٠ْ يَكُنْ شَاهِدٌ فَالْيَ٠ُدَّعَى عَلَيْهِ فَإِنْ لَ٠ْ يَحْلِفْ [وَ] رَدَّ الْيَ٠ُدَّعِي فَهُوَ وَاجِبٌ عَلَيْهِ أَنْ يَحْلِفَ وَيَأْخُذَ حَقَّهُ فَإِنْ أَبَى أَنْ يَحْلِفَ فَلا شَيْ‏ءَ لَهُ.

If the defendant does not take the oath and turns it to plaintiff then it is obligatory on him to take the oath to receive his right, and if he declines, there is nothing for him.’” رسل - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (24/283))