While the Messenger of Allah ﷺ was delivering (a sermon) on Friday, a caravan of merchandise came to Medina. The Companions of the Messenger of Allah ﷺ rushed towards it till only twelve persons were left with him including Abu Bakr and 'Umar; and it was at this occasion that this verse was revealed." And when they see merchandise or sport, they break away to it."
بَيْنَا النَّبِيُّ ﷺ قَائِمٌ يَوْمَ الْجُمُعَةِ إِذْ قَدِمَتْ عِيرٌ إِلَى الْمَدِينَةِ فَابْتَدَرَهَا أَصْحَابُ رَسُولِ اللَّهِ ﷺ حَتَّى لَمْ يَبْقَ مَعَهُ إِلاَّ اثْنَا عَشَرَ رَجُلاً فِيهِمْ أَبُو بَكْرٍ وَعُمَرُ قَالَ وَنَزَلَتْ هَذِهِ الآيَةُ { وَإِذَا رَأَوْا تِجَارَةً أَوْ لَهْوًا انْفَضُّوا إِلَيْهَا}