Surah Luqman (لقمان) Ayah 19 - Tafsir

وَٱقْصِدْ فِى مَشْيِكَ وَٱغْضُضْ مِن صَوْتِكَ ۚ إِنَّ أَنكَرَ ٱلْأَصْوَٰتِ لَصَوْتُ ٱلْحَمِيرِ

"And be moderate in your pace and lower your voice; indeed, the most disagreeable of sounds is the voice of donkeys.""