Surah Al-Mursalat, ayah 27

وَجَعَلۡنَا فِيهَا رَوَٰسِيَ شَٰمِخَٰتٖ وَأَسۡقَيۡنَٰكُم مَّآءٗ فُرَاتٗا ٢٧

Waja'alnā fīhā rawāsiya shāmikhātin wa asqaynākum mā'an furātā

And We placed therein lofty, firmly set mountains and have given you to drink sweet water.