11/09/2023
Allah says in Surah Jummah(Ch. 62), verse 9 of Al-Qur'an:
يَـٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓا۟ إِذَا نُودِىَ لِلصَّلَوٰةِ مِن يَوْمِ ٱلْجُمُعَةِ فَٱسْعَوْا۟ إِلَىٰ ذِكْرِ ٱللَّهِ وَذَرُوا۟ ٱلْبَيْعَ ۚ ذَٰلِكُمْ خَيْرٌۭ لَّكُمْ إِن كُنتُمْ تَعْلَمُونَ ٩
“O you who have believed, when [the adhan] is called for the prayer on the day of Jumu'ah [Friday], then proceed to the remembrance of Allah and leave trade. That is better for you, if you only knew”.
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In essence, the Qur'an and ahadith invoke the importance of Friday as a sacred day of worship and as a day of celebration (an 'eid):
Ibn Abbas reported: The Messenger of Allah, peace and blessings be upon him, said, “Verily, Allah has made this day of Friday a celebration for the Muslims. Whoever comes to Friday prayer, let him bathe himself, apply perfume if he has it, and use the toothstick.”
Source: Sunan Ibn Mājah 1098
The hadith is considered "Sahih" (authentic) according to Al-Albani.