Quran 20:119 from Surah Taa-Haa on Divine Marvels.
وَأَنَّكَ لَا تَظۡمَؤُاْ فِيهَا وَلَا تَضۡحَىٰ
English translation: And that you not will suffer from thirst therein and not exposed to the sun's heat
Transliteration: wa-annaka la tazma-u fiha wala tadha