سورة لقمان

وَاقْصِدْ فِي مَشْيِكَ وَاغْضُضْ مِنْ صَوْتِكَ ۚ إِنَّ أَنْكَرَ الْأَصْوَاتِ لَصَوْتُ الْحَمِيرِ ﴿١٩﴾

Surah Luqman

19. And moderate your stride, and lower your voice. The most repulsive of voices is the donkey’s voice.”