[Machine] There were markets in 'Ukaz, Majannah, and Dhul-Majaz during the pre-Islamic era. When Islam came, they were forbidden from engaging in trade there. Allah then revealed the verse: "There is no blame upon you" (Surah Al-Baqarah 198) to seek the bounty of your Lord during the seasons of Hajj.  

كَانَتْ عُكَاظٌ وَمَجَنَّةُ وَذُو الْمَجَازِ أَسْوَاقًا فِي الْجَاهِلِيَّةِ فَلَمَّا كَانَ الْإِسْلَامُ تَأَثَّمُوا مِنَ التِّجَارَةِ فِيهَا فَأَنْزَلَ اللهُ ﷻ {لَيْسَ عَلَيْكُمْ جُنَاحٌ} [البقرة 198] أَنْ تَبْتَغُوا فَضْلًا مِنْ رَبِّكُمْ فِي مَوَاسِمِ الْحَجِّ  

The people used to trade, in the beginning, at Mina, Arafat, the market place of Dhul-Majaz, and during the season of hajj. But (later on) they became afraid of trading while they were putting on ihram. So Allah, glory be to Him, sent down this verse: "It is no sin for you that you seek the bounty of your Lord during the seasons of hajj." Ubayd ibn Umayr told me that he (Ibn Abbas) used to recite this verse in his codex. (Using translation from Abū Dāʾūd 1734)   

أَنَّ النَّاسَ فِي أَوَّلِ الْحَجِّ كَانُوا يَتَبَايَعُونَ بِمِنًى وَعَرَفَةَ وَسُوقِ ذِي الْمَجَازِ وَمَوَاسِمِ الْحَجِّ فَخَافُوا الْبَيْعَ وَهُمْ حُرُمٌ فَأَنْزَلَ اللهُ تَبَارَكَ وَتَعَالَى {لَيْسَ عَلَيْكُمْ جُنَاحٌ أَنْ تَبْتَغُوا فَضْلًا مِنْ رَبِّكُمْ} [البقرة 198] فِي مَوَاسِمِ الْحَجِّ زَادَ آدَمُ فِي رِوَايَتِهِ قَالَ فَحَدَّثَنِي عُبَيْدُ بْنُ عُمَيْرٍ أَنَّهُ كَانَ يَقْرَؤُهَا فِي الْمُصْحَفِ