Yahya related to me from Malik that he had heard that Umar ibn al-Khattab said, "There is no hoarding in our market, and men who have excess gold in their hands should not buy up one of Allah's provisions which he has sent to our courtyard and then hoard it up against us. Someone who brings imported goods through great fatigue to himself in the summer and winter, that person is the guest of Umar. Let him sell what Allah wills and keep what Allah wills."  

قَالَ لاَ حُكْرَةَ فِي سُوقِنَا لاَ يَعْمِدُ رِجَالٌ بِأَيْدِيهِمْ فُضُولٌ مِنْ أَذْهَابٍ إِلَى رِزْقٍ مِنْ رِزْقِ اللَّهِ نَزَلَ بِسَاحَتِنَا فَيَحْتَكِرُونَهُ عَلَيْنَا وَلَكِنْ أَيُّمَا جَالِبٍ جَلَبَ عَلَى عَمُودِ كَبِدِهِ فِي الشِّتَاءِ وَالصَّيْفِ فَذَلِكَ ضَيْفُ عُمَرَ فَلْيَبِعْ كَيْفَ شَاءَ اللَّهُ وَلْيُمْسِكْ كَيْفَ شَاءَ اللَّهُ  

[Machine] "Omar, may Allah be pleased with him, said: Neither long life nor abundant blessings come to us from Allah except when people flourish through their earnings. But when groups come and monopolize trade, they divert themselves from helping widows and the poor. Whenever profits are made, they sell as they please, with no restrictions. However, whatever goods are brought carrying the burden on their back in summer and winter until they are sold in our market, is a provision for Omar. So, let him sell as he pleases by the will of Allah and let him restrain as he pleases by the will of Allah. Malik mentioned this in Al-Muwatta, narrated from Omar ibn Al-Khattab."  

عُمَرُ لَا وَلَا نِعْمَةَ عَيْنٍ يَأْتِينَا اللهُ ﷻ بِالرِّزْقِ حَتَّى إِذَا نَزَلَ بِسُوقِنَا قَامَ أَقْوَامٌ فَاحْتَكَرُوا بِفَضْلِ أَذْهَابِهِمْ عَنِ الْأَرْمَلَةِ وَالْمِسْكِينِ إِذَا خَرَجَ الْجُلَّابُ بَاعُوا عَلَى نَحْوِ مَا يُرِيدُونَ مِنَ التَّحَكُّمِ وَلَكِنْ أَيُّمَا جَالِبٍ جَلَبَ يَحْمِلُهُ عَلَى عَمُودِ كَبِدِهِ فِي الشِّتَاءِ وَالصَّيْفِ حَتَّى يَنْزِلَ سُوقَنَا فَذَلِكَ ضَيْفٌ لِعُمَرَ فَلْيَبِعْ كَيْفَ شَاءَ اللهُ وَلْيُمْسِكْ كَيْفَ شَاءَ اللهُ وَذَكَرَهُ مَالِكٌ فِي الْمُوَطَّأِ مُرْسَلًا عَنْ عُمَرَ بْنِ الْخَطَّابِ ؓ