سورة Al-A'raf (The Heights ) - الآية 163

And ask them (O dear Prophet Mohammed – peace and blessings be upon him) of the township that was by the sea; when they used to exceed in the matter of the Sabbath – when their fish used to come swimming atop the water in front of them on the day of Sabbath and not come on the days it was not Sabbath; this is how We used to test them, due to their disobedience.