Suuratul – Jumu’ah Verse 9.
يَـٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓا۟ إِذَا نُودِىَ لِلصَّلَوٰةِ مِن يَوْمِ ٱلْجُمُعَةِ فَٱسْعَوْا۟ إِلَىٰ ذِكْرِ ٱللَّـهِ وَذَرُوا۟ ٱلْبَيْعَ ۚ ذَٰلِكُمْ خَيْرٌ لَّكُمْ إِن كُنتُمْ تَعْلَمُونَ ﴿٩
9. 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 [Khutbah and Salat] and leave off business, that is better for you if you did but know!
Tafsir Ibn Kathir Volume 9, Page
Friday is called Al-Jumu`ah because it is derived from Al-Jam`, literally, gathering. The people of Islam gather weekly, on every Friday in the major places of worship. It was during Friday when Allah finished the creation, the sixth day, during which Allah created the heavens and earth. During Friday, Allah created Adam, and he was placed in Paradise, and ironically, it was a Friday when he was taken out of Paradise. It will be on a Friday when the Last Hour will commence. There is an hour during Friday, wherein no faithful servant asks Allah for something good, but Allah will give him what he asked for. All of this is based upon Hadiths in the authenic collections.
In the ancient language Friday was called, `Arubah. It is a fact that previous nations were informed about Friday, but they were led astray from it. The Jews chose Saturday for their holy day, but Adam was not created on Saturday. The Christians chose Sunday, which is the day the creation was initiated. Allah chose Friday for this Ummah, because it is the day the creation was finished.Al-Bukhari and Muslim recorded that Abu Hurayrah said that the Messenger of Allah said,
«نَحْنُ الْاخِرُونَ السَّابِقُونَ يَوْمَ الْقِيَامَةِ، بَيْدَ أَنَّهُمْ أُوتُوا الْكِتَابَ مِنْ قَبْلِنَا، ثُمَّ إِنَّ هَذَا يَوْمَهُمُ الَّذِي فَرَضَ اللهُ عَلَيْهِمْ فَاخْتَلَفُوا فِيهِ فَهَدَانَا اللهُ لَهُ، فَالنَّاسُ لَنَا فِيهِ تَبَعٌ، الْيَهُودُ غَدًا وَالنَّصَارَى بَعْدَ غَدٍ»
(We are the last (to come) but the first on the Day of Resurrection, though the former nations were given the Scriptures before us. And this was their day (Friday) the celebration of which was made compulsory for them, but they differed about it. So, Allah gave us guidance to it, and all other people are coming after us: the Jews tomorrow and the Christians the day after tomorrow.”