حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ حَدَّثَنَا شُعْبَةُ عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ سَمِعْتُ ابْنَ عُمَرَ قَالَ كَانَ رَجُلٌ مِنْ قُرَيْشٍ يُغْبَنُ فِي الْبَيْعِ فَذَكَرَ ذَلِكَ لِلنَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ لَهُ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قُلْ لَا خِلَابَةَ
مسند امام احمد بن حنبل · Hadith 5036
It was narrated from 'Abdullah ibn Dinar: I heard Ibn 'Umar say: A man of Quraysh would be taken advantage of in buying and selling. That was mentioned to the Prophet) and the Prophet (PBUH) said to him: "Say: There should be no cheating (on either side)."
Sanad
حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ حَدَّثَنَا شُعْبَةُ عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ سَمِعْتُ ابْنَ عُمَرَ