Ta-Ha 20:76

جَنَّٰتُ عَدۡنࣲ تَجۡرِي مِن تَحۡتِهَا ٱلۡأَنۡهَٰرُ خَٰلِدِينَ فِيهَاۚ وَذَٰلِكَ جَزَآءُ مَن تَزَكَّىٰ۝٧٦

76. Gardens of perpetual residence beneath which rivers flow, wherein they abide eternally. And that is the reward of one who purifies himself