وَ رَوَى مُحَمَّدُ بْنُ أَبِي عُمَيْرٍ عَنْ مُيَسِّرِ بْنِ عَبْدِ اَلْعَزِيزِ قَالَ: قُلْتُ لِأَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ رَجُلٌ اِشْتَرَى زِقَّ زَيْتٍ فَوَجَدَ فِيهِ دُرْدِيّاً فَقَالَ "إِنْ كَانَ مِمَّنْ يَعْلَمُ أَنَّ ذَلِكَ يَكُونُ فِي اَلزَّيْتِ لَمْ يَرُدَّهُ عَلَيْهِ وَ إِنْ لَمْ يَكُنْ يَعْلَمُ أَنَّ ذَلِكَ يَكُونُ فِي اَلزَّيْتِ رَدَّهُ عَلَيْهِ".
Muhammad ibn Abi Umayr narrates from Muyassir ibn Abdul Aziz, who said: I asked Imam Jafar ibn Muhammad Al-Sadiq (a.s), about a man who bought a container of oil and found sediment (dregs) in it. Imam (a.s) said: "If the buyer was aware that such sediment is commonly found in oil, he cannot return it. However, if he was unaware that such sediment is usually present, he has the right to return it."