Al-Kāfi - The Book of Commerce

Al-Kāfi - The Book of Commerce ِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ عَنْ يَعْقُوبَ بْنِ يَزِيدَ عَنْ زَكَرِيَّا الْخَزَّازِ عَنْ يَحْيَى الْحَذَّاءِ قَالَ قُلْتُ لأبِي الْحَسَنِ (عَلَيْهِ السَّلا٠َا اشْتَرَيْتُ الشَّيْ‏ءَ بِحَضْرَةِ أَبِي فَأَرَى ٠ُّ بِهِ فَقَالَ تَنَكَّبْهُ وَلا تَشْتَرِ بِحَضْرَتِهِ فَإِذَا كَانَ لَكَ عَلَى رَجُلٍ حَقٌّ فَقُلْ لَهُ فَلْيَكْتُبْ وَكَتَبَ فُلانُ بْنُ فُلانٍ بِخَطِّهِ وَأَشْهَدَ اللهَ عَلَى نَفْسِهِ وَكَفَى بِاللهِ شَهِيداً فَإِنَّهُ يُقْضَى فِي حَيَاتِهِ أَوْ بَعْدَ وَفَاتِهِ.

When you have a right on a man say to him, “Write down, ‘So and so has written in his handwriting, assigning Allah as witness upon himself and Allah is sufficient witness.’” He will certainly pay in his life time or after his death.’” ضعيف - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (19/438))