Surah 62

Surah 62:9

"You who believe! When the call to prayer is made on the day of assembly, hurry to the remembrance of God, and leave business aside. That is better for you, if (only) you knew."

– When the call to prayer is made on the day of assembly
Even today, Muslim businessmen leave their work aside to attend Friday prayers.

- from The Quran with Christian Commentary: A Guide to Understanding the Scripture of Islam