وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّ عُمَرَ بْنَ الْخَطَّابِ، قَالَ لاَ تَبِيعُوا الذَّهَبَ بِالذَّهَبِ إِلاَّ مِثْلاً بِمِثْلٍ وَلاَ تُشِفُّوا بَعْضَهَا عَلَى بَعْضٍ وَلاَ تَبِيعُوا الْوَرِقَ بِالْوَرِقِ إِلاَّ مِثْلاً بِمِثْلٍ وَلاَ تُشِفُّوا بَعْضَهَا عَلَى بَعْضٍ وَلاَ تَبِيعُوا الْوَرِقَ بِالذَّهَبِ أَحَدُهُمَا غَائِبٌ وَالآخَرُ نَاجِزٌ وَإِنِ اسْتَنْظَرَكَ إِلَى أَنْ يَلِجَ بَيْتَهُ فَلاَ تُنْظِرْهُ إِنِّي أَخَافُ عَلَيْكُمُ الرَّمَاءَ وَالرَّمَاءُ هُوَ الرِّبَا .
Yahya related to me from Malik from Nafi from Abdullah ibn Umarthat Umar ibn al-Khattab said, "Do not sell gold for gold except likefor like, and do not increase one part over another part. Do not sellsilver for silver except like for like, and do not increase one partover another part. Do not sell silver for gold, one of them at handand the other to be given later. If someone seeks to delay paying youuntil he has been to his house, do not leave him. I fear rama foryou." Rama is usury. Translation Not Available
Book Ref: Muwatta Imam Malik Book 31 Hadith 1325
Web Ref: Muwatta Imam Malik Book 31 Hadith 34