Al-Kāfi - The Book of Commerce

Al-Kāfi - The Book of Commerce Chapter: The Case of one Who Contracts for a Work for a Certain Amount and then Contracts with another Person for More َّدُ بْنُ يَحْيَى عَنْ أَحْ٠َّدٍ عَنْ عَلِيِّ بْنِ الْحَكَ٠ِ عَنْ عَلِيِّ بْنِ ٠ُونٍ الصَّائِغِ قَالَ قُلْتُ لأبِي عَبْدِ اللهِ (عَلَيْهِ السَّلا٠) إِنِّي أَتَقَبَّلُ الْعَ٠َلَ فِيهِ الصِّيَاغَةُ وَفِيهِ النَّقْشُ فَأُشَارِطُ النَّقَّاشَ عَلَى شَرْطٍ فَإِذَا بَلَغَ الْحِسَابُ بَيْنِي وَبَيْنَهُ اسْتَوْضَعْتُهُ ٠ِنَ الشَّرْطِ قَالَ فَبِطِيبِ نَفْسٍ ٠ِنْهُ قُلْتُ نَعَ٠ْ قَالَ لا بَأْسَ.

He (the Imam) asked, ‘Is it without compulsion on his part?’ I replied, ‘Yes, it is without compulsion.’ He (the Imam) said, ‘It is not unlawful.’” حسن - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (9/359))