The Heights - 7:163
Ask them about the people by the sea. They used to violate the prohibition of work on Saturday. On the day when they observed Saturday their fish came to them in abundance, but on the day when they did not observe Saturday no fish came to them. Thus did We test them because they went astray.
Related:
The Cow/2:65
"Surely you know those of you who transgressed the prohibition of Saturday. We said to them: "Be despicable monkeys"."
The Cow/2:66
We made this punishment a lesson for their contemporaries and the generations to come, and an admonition for righteous men.
The Women/4:47
People of the Book! Believe in what We have sent down confirming what is with you, before We turn away some faces and send them into exile and curse them as We cursed the people of Saturday. Allah´s command has always been practiced.
The Women/4:154
"We raised Mount Sinai above them, and We said to them, "Enter humbly through the gate."We said to them, "Do not transgress the prohibition of Saturday"; and We took from them a firm promise."
The Heights/7:163
Ask them about the people by the sea. They used to violate the prohibition of work on Saturday. On the day when they observed Saturday their fish came to them in abundance, but on the day when they did not observe Saturday no fish came to them. Thus did We test them because they went astray.
The Bee/16:124
Saturday was made obligatory only for those who differed on it. Your Lord will judge between them on the Day of Resurrection about that in which they differed.