حَدَّثَنَا وَكِيعٌ حَدَّثَنَا سُفْيَانُ عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ عَنِ ابْنِ عُمَرَ قَالَ جَاءَ رَجُلٌ إِلَى النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ يَا رَسُولَ اللَّهِ إِنِّي أُخْدَعُ فِي الْبَيْعِ فَقَالَ إِذَا بِعْتَ فَقُلْ لَا خِلَابَةَ
مسند امام احمد بن حنبل · Hadith 5271
It was narrated that Ibn 'Umar said: A man came to the Prophet (PBUH) and said: O Messenger of Allah, I am taken advantage of in buying and selling. He said: "When you sell, say- There should be no cheating (on either side).”
Sanad
حَدَّثَنَا وَكِيعٌ حَدَّثَنَا سُفْيَانُ عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ عَنِ ابْنِ عُمَرَ