﴿ وَلَقَدْ أَرْسَلْنَا نُوحًا إِلَىٰ قَوْمِهِۦ فَلَبِثَ فِيهِمْ أَلْفَ سَنَةٍ إِلَّا خَمْسِينَ عَامًۭا فَأَخَذَهُمُ ٱلطُّوفَانُ وَهُمْ ظَٰلِمُونَ ﴾

“And, indeed, [in times long past] We sent forth Noah unto his people, and he dwelt among them a thousand years bar fifty; and then the floods over­whelmed them while they were still lost in evildoing:”

Please check ayah 29:15 for complete tafsir.