Chapter on Sales
Man Lā Yaḥḍuruh al-Faqīh|Volume 3|Book 2|Chapter 11
وَ رَوَى حَمَّادٌ عَنِ اَلْحَلَبِيِّ قَالَ: سَأَلْتُ أَبَا عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ عَنْ رَجُلٍ اِشْتَرَى ثَوْباً ثُمَّ رَدَّهُ عَلَى صَاحِبِهِ فَأَبَى أَنْ يُقِيلَهُ إِلاَّ بِوَضِيعَةٍ قَالَ "لاَ يَصْلُحُ لَهُ أَنْ يَأْخُذَهُ بِوَضِيعَةٍ فَإِنْ جَهِلَ فَأَخَذَهُ فَبَاعَهُ بِأَكْثَرَ مِنْ ثَمَنِهِ رَدَّ عَلَى صَاحِبِهِ اَلْأَوَّلِ مَا زَادَ".
Hammad narrated from Al-Halabi who said: I asked Abu Abdullah عليه السلام about a man who bought a garment and then returned it to its seller, but the seller refused to cancel the sale except with a reduction in price. The Imam عليه السلام said: "It is not permissible for him to take it back at a reduced price. If he was unaware and took it back, then sold it for more than its original price, he must return the extra amount to the first seller."
- Ṣaḥīḥ al-Faqīh, p. 225