Narrated Jabir:

While we were offering the prayer with the Prophet a caravan carrying food came from Sham. The people looked towards the caravan (and went to it) and only twelve persons remained with the Prophet. So, the Divine Inspiration came;
"But when they see some bargain or some amusement, they disperse headlong to it." (62.11)

حَدَّثَنَا طَلْقُ بْنُ غَنَّامٍ، حَدَّثَنَا زَائِدَةُ، عَنْ حُصَيْنٍ، عَنْ سَالِمٍ، قَالَ حَدَّثَنِي جَابِرٌ ـ رضى الله عنه ـ قَالَ بَيْنَمَا نَحْنُ نُصَلِّي مَعَ النَّبِيِّ ﷺ إِذْ أَقْبَلَتْ مِنَ الشَّأْمِ عِيرٌ، تَحْمِلُ طَعَامًا، فَالْتَفَتُوا إِلَيْهَا، حَتَّى مَا بَقِيَ مَعَ النَّبِيِّ ﷺ إِلاَّ اثْنَا عَشَرَ رَجُلاً فَنَزَلَتْ {وَإِذَا رَأَوْا تِجَارَةً أَوْ لَهْوًا انْفَضُّوا إِلَيْهَا}