٤- عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ عَبْدِ الرَّحْمَنِ بْنِ الْحَجَّاجِ قَالَ قُلْتُ لأبِي عَبْدِ اللهِ (عَلَيْهِ السَّلام) الرَّجُلُ يَجِيئُنِي يَطْلُبُ الْمَتَاعَ فَأُقَاوِلُهُ عَلَى الرِّبْحِ ثُمَّ أَشْتَرِيهِ فَأَبِيعُهُ مِنْهُ فَقَالَ أَلَيْسَ إِنْ شَاءَ أَخَذَ وَإِنْ شَاءَ تَرَكَ قُلْتُ بَلَى قَالَ لا بَأْسَ بِهِ قُلْتُ فَإِنَّ مَنْ عِنْدَنَا يُفْسِدُهُ قَالَ وَلِمَ قُلْتُ بَاعَ مَا لَيْسَ عِنْدَهُ قَالَ فَمَا يَقُولُ فِي السَّلَمِ قَدْ بَاعَ صَاحِبُهُ مَا لَيْسَ عِنْدَهُ قُلْتُ بَلَى قَالَ فَإِنَّمَا صَلَحَ مِنْ أَجْلِ أَنَّهُمْ يُسَمُّونَهُ سَلَماً إِنَّ أَبِي كَانَ يَقُولُ لا بَأْسَ بِبَيْعِ كُلِّ مَتَاعٍ كُنْتَ تَجِدُهُ فِي الْوَقْتِ الَّذِي بِعْتَهُ فِيهِ.
4. Ali ibn Ibrahim has narrated from his father from ibn abu ‘ Umayr from ‘Abd al- Rahman ibn al-Hajjaj who has said the following: “I once said to abu ‘Abd Allah , ‘A man comes to me and asks for certain goods. I contract with him for a certain profit, then buy it to sell to him. He (the Imam) asked, ‘Does he have the choice to take or leave it?’ I replied, ‘Yes, he does.’ He (the Imam) said, Tt is lawful.’ I then said, ‘There are those among us who destroy it.’. He (the Imam) asked, ‘Why is that?’ I replied, ‘He sells what is not with him.’ He (the Imam) asked, ‘What does he say about advance payment to receive goods in future in which case he sells what is not with him?’ I replied, ‘Yes, it happens.’ He (the Imam) said, Tt is valid because they call it advance payment. My father would say, “It is lawful to sell all kinds of goods that you can find at the time you sell.’”” 