حَدَّثَنَا أَبُو سَعِيدٍ مَوْلَى بَنِي هَاشِمٍ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ لَهِيعَةَ حَدَّثَنَا مُوسَى بْنُ وَرْدَانَ قَالَ سَمِعْتُ سَعِيدَ بْنَ الْمُسَيَّبِ يَقُولُ سَمِعْتُ عُثْمَانَ رَضِيَ اللَّهُ عَنْهُ يَخْطُبُ عَلَى الْمِنْبَرِ وَهُوَ يَقُولُ كُنْتُ أَبْتَاعُ التَّمْرَ مِنْ بَطْنٍ مِنْ الْيَهُودِ يُقَالُ لَهُمْ بَنُو قَيْنُقَاعَ فَأَبِيعُهُ بِرِبْحٍ فَبَلَغَ ذَلِكَ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ يَا عُثْمَانُ إِذَا اشْتَرَيْتَ فَاكْتَلْ وَإِذَا بِعْتَ فَكِلْ
مسند امام احمد بن حنبل · Hadith 444
Sa'eed bin al-Musayyab said: I heard 'Uthman (RA) delivering a khutbah from the minbar. He said: I used to buy dates from one of the Jewish clans who were called Banu Qainuqa', and sell them at a profit. News of that reached the Messenger of Allah (PBUH) who said: "O 'Uthman, when you buy, take your dues with nothing extra, and when you sell, give (the other party's) dues with nothing less."
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020