O you who believe when the call for prayer is made on Friday hasten set off to the remembrance of God to the prayer and leave aside all commerce suspend all such contracts. That is better for you should you know that it is better for you then do it.
- 62:99
يَا أَيُّهَا الَّذِينَ آمَنُوا إِذَا نُودِيَ لِلصَّلَاةِ مِنْ يَوْمِ الْجُمُعَةِ فَاسْعَوْا إِلَىٰ ذِكْرِ اللَّهِ وَذَرُوا الْبَيْعَ ۚ ذَٰلِكُمْ خَيْرٌ لَكُمْ إِنْ كُنْتُمْ تَعْلَمُونَ
O you who believe (Muslims)! When the call is proclaimed for the Salat (prayer) on the day of Friday (Jumu'ah prayer), come to the remembrance of Allah [Jumu'ah religious talk (Khutbah) and Salat (prayer)] and leave off business (and every other thing), that is better for you if you did but know!
- common.revelation-Medinan
- common.hizb : 221