31. Lukman · Verse 19

سورة لقمان
19

وَٱقۡصِدۡ فِي مَشۡيِكَ وَٱغۡضُضۡ مِن صَوۡتِكَۚ إِنَّ أَنكَرَ ٱلۡأَصۡوَٰتِ لَصَوۡتُ ٱلۡحَمِيرِ

"And be moderate in thy pace, and lower thy voice; for the harshest of sounds without doubt is the braying of the ass."