Surah Al-Jumu‘ah 62:9

يَا أَيُّهَا الَّذِينَ آمَنُوا إِذَا نُودِيَ لِلصَّلَاةِ مِن يَوْمِ الْجُمُعَةِ فَاسْعَوْا إِلَىٰ ذِكْرِ اللَّهِ وَذَرُوا الْبَيْعَ ۚ ذَ‌ٰلِكُمْ خَيْرٌ لَّكُمْ إِن كُنتُمْ تَعْلَمُونَ

62:9 al-Jumu‘ahالْجُمُعَةِ means the special or the particular gathering. This may be a reference to the gathering on Fridays, or a gathering behind a Muzakkî – purifier, which is a spiritual gathering. The meaning may also include the great gathering on the Day of Resurrection, which verse 18:99 وَنُفِخَ فِي الصُّورِ فَجَمَعْنَاهُمْ جَمْعًا refers. The words that follow apply to all three types of gatherings. Attendance at the Jumu‘ahجُمُعَةِ (- the gathering) Prayer is obligatory. As soon as the call to this Prayer is sounded, Muslims should leave their business and hasten to the Mosque. In other words, business activity before the call of the Friday Prayer may not to be abandoned. Moreover, when the Prayer is finished then they should disperse in the land and seek of Allâh’s grace in their businesses and in their efforts of earning their livelihood. “And when the Prayer is finished, disperse in the land and seek Allâh’s grace and bounty” فَإِذَا قُضِيَتِ الصَّلَاةُ فَانتَشِرُوا فِي الْأَرْضِ وَابْتَغُوا مِن فَضْلِ اللَّهِ in the next verse means the business after the Jumu‘ahجُمُعَةِ Prayer should be continued and not can be continued. There is no clause of choice in this verse. The Muslim countries that make Friday a day off work are not acting according to this Qur’ânic injunction. Unlike the Jewish Sabbats or Christian Sundays, for Muslims, Friday is not a day of rest. Before and after the Friday Prayer Muslims are exhorted to follow their daily activities.