حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم نَهَى عَنْ بَيْعٍ وَسَلَفٍ . قَالَ مَالِكٌ وَتَفْسِيرُ ذَلِكَ أَنْ يَقُولَ الرَّجُلُ لِلرَّجُلِ آخُذُ سِلْعَتَكَ بِكَذَا وَكَذَا عَلَى أَنْ تُسْلِفَنِي كَذَا وَكَذَا . فَإِنْ عَقَدَا بَيْعَهُمَا عَلَى هَذَا فَهُوَ غَيْرُ جَائِزٍ فَإِنْ تَرَكَ الَّذِي اشْتَرَطَ السَّلَفَ مَا اشْتَرَطَ مِنْهُ كَانَ ذَلِكَ الْبَيْعُ جَائِزًا . قَالَ مَالِكٌ وَلاَ بَأْسَ أَنْ يُشْتَرَى الثَّوْبُ مِنَ الْكَتَّانِ أَوِ الشَّطَوِيِّ أَوِ الْقَصَبِيِّ بِالأَثْوَابِ مِنَ الإِتْرِيبِيِّ أَوِ الْقَسِّيِّ أَوِ الزِّيقَةِ أَوِ الثَّوْبِ الْهَرَوِيِّ أَوِ الْمَرْوِيِّ بِالْمَلاَحِفِ الْيَمَانِيَّةِ وَالشَّقَائِقِ وَمَا أَشْبَهَ ذَلِكَ الْوَاحِدُ بِالاِثْنَيْنِ أَوِ الثَّلاَثَةِ يَدًا بِيَدٍ أَوْ إِلَى أَجَلٍ وَإِنْ كَانَ مِنْ صِنْفٍ وَاحِدٍ فَإِنْ دَخَلَ ذَلِكَ نَسِيئَةٌ فَلاَ خَيْرَ فِيهِ . قَالَ مَالِكٌ وَلاَ يَصْلُحُ حَتَّى يَخْتَلِفَ فَيَبِينَ اخْتِلاَفُهُ فَإِذَا أَشْبَهَ بَعْضُ ذَلِكَ بَعْضًا وَإِنِ اخْتَلَفَتْ أَسْمَاؤُهُ فَلاَ يَأْخُذْ مِنْهُ اثْنَيْنِ بِوَاحِدٍ إِلَى أَجَلٍ وَذَلِكَ أَنْ يَأْخُذَ الثَّوْبَيْنِ مِنَ الْهَرَوِيِّ بِالثَّوْبِ مِنَ الْمَرْوِيِّ أَوِ الْقُوهِيِّ إِلَى أَجَلٍ أَوْ يَأْخُذَ الثَّوْبَيْنِ مِنَ الْفُرْقُبِيِّ بِالثَّوْبِ مِنَ الشَّطَوِيِّ فَإِذَا كَانَتْ هَذِهِ الأَجْنَاسُ عَلَى هَذِهِ الصِّفَةِ فَلاَ يُشْتَرَى مِنْهَا اثْنَانِ بِوَاحِدٍ إِلَى أَجَلٍ . قَالَ مَالِكٌ وَلاَ بَأْسَ أَنْ تَبِيعَ مَا اشْتَرَيْتَ مِنْهَا قَبْلَ أَنْ تَسْتَوْفِيَهُ مِنْ غَيْرِ صَاحِبِهِ الَّذِي اشْتَرَيْتَهُ مِنْهُ إِذَا انْتَقَدْتَ ثَمَنَهُ .
Yahya related to me from Malik that he had heard that theMessenger of Allah, may Allah bless him and grant him peace, forbade'selling and lending.' Malik said, "The explanation of whatthat meant is that one man says to another, 'I will take your goodsfor such-and-such if you lend me such-and-such.' If they agree to atransaction in this manner, it is not permitted. If the one whostipulates the loan abandons his stipulation, then the sale ispermitted." Malik said, "There is no harm in exchanging linenfrom Shata, for garments from Itribi, or Qass, or Ziqa. Or the clothof Herat or Merv for Yemeni cloaks and shawls and such like as one fortwo or three, from hand to hand or with delayed terms. If the goodsare of the same kind, and deferment enters into the transaction, thereis no good in it." Malik said, "It is not good unless theyare different, and the difference between them is clear. When theyresemble each other, even if the names are different, do not take twofor one with delayed terms, for instance two garments of Herat for onefrom Merv or Quhy with delayed terms, ortwo garments of Furqub for onefrom Shata. All these sorts are of the same description, so do not buytwo for one, on delayed terms." Malik said, "There is no harmin selling what you buy of things of this nature, before you completethe deal, to some one other than the person from whom you purchasedthem if the price was paid in cash." Translation Not Available
Book Ref: Muwatta Imam Malik Book 31 Hadith 1360
Web Ref: Muwatta Imam Malik Book 31 Hadith 69