حَدَّثَنَا عَفَّانُ حَدَّثَنَا شُعْبَةُ عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ عَنِ ابْنِ عُمَرَ أَنَّ رَجُلًا مِنْ قُرَيْشٍ قَالَ لِرَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِنِّي أَشْتَرِي الْبَيْعَ فَأُخْدَعُ فَقَالَ إِذَا كَانَ ذَاكَ فَقُلْ لَا خِلَابَةَ
مسند امام احمد بن حنبل · Hadith 5854
It was narrated from ibn 'Umar that a man of Quraysh said to the Messenger of Allah (PBUH): I buy and sell and I am taken advantage of. He said: "If that is the case, say: There should be no dieating (on either side)."
Sanad
حَدَّثَنَا عَفَّانُ حَدَّثَنَا شُعْبَةُ عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ عَنِ ابْنِ عُمَرَ