From Sahih Bukhari (Hadith 4899):
Narrated Jabir bin `Abdullah:A caravan of merchandise arrived at Medina on a Friday while we were with the Prophet (ﷺ) All the people left (the Prophet (ﷺ) and headed for the caravan) except twelve persons. Then Allah revealed:-- 'But when they see some bargain or some amusement they disperse headlong to it
Reference: Bukhari 4899