Surah An-Naba, ayah 35

78:35

لَّا يَسۡمَعُونَ فِيهَا لَغۡوٗا وَلَا كِذَّٰبٗا ٣٥

Llā yasma'ūna fīhā laghwan walā kiddhābā

No ill speech will they hear therein or any falsehood -