And that the creation was created in six days by Allah. Then, He gathered them on Friday hence it is called Al-Jumu’ah (The day of gathering). The affair of the creation continues thereafter to Saturday. Saturday, originally from the word “Assobat” hence it was made to be the day of celebration and rest for the Jews and they were not allowed to work on this day. Then, Allah U wanted to test them and test their faith and obedience. These group of Jews lived by the sea and they were fishermen. Then, Allah U caused the fish and sea creatures to be plentiful on Saturday but it was not permissible for them to work on Saturday. They used to have parties and they leave their nets (to trap the fish) on Saturday, the day the fish gathered. Then, they would take their nets on Sunday. And Allah U most High would not be tricked or mocked. It has been narrated that this story also appears in Surah Al-‘Araf in which Allah  says:

﴿وَاسْأَلْهُمْ عَنِ الْقَرْيَةِ الَّتِي كَانَتْ حَاضِرَةَ الْبَحْرِ إِذْ يَعْدُونَ فِي السَّبْتِ إِذْ تَأْتِيهِمْ حِيتَانُهُمْ يَوْمَ سَبْتِهِمْ شُرَّعًا وَيَوْمَ لَا يَسْبِتُونَ ۙ لَا تَأْتِيهِمْ ۚ كَذَٰلِكَ نَبْلُوهُم بِمَا كَانُوا يَفْسُقُونَ﴾

“And ask them about the town that was by the sea – when they transgressed in [the matter of] the sabbath – when their fish came to them openly on their sabbath day, and the day they had no sabbath they did not come to them. Thus, did We give them trial because they were defiantly disobedient.” [Surah Al-A’raaf: 163]