وَٱقۡصِدۡ فِي مَشۡيِكَ وَٱغۡضُضۡ مِن صَوۡتِكَۚ إِنَّ أَنكَرَ ٱلۡأَصۡوَٰتِ لَصَوۡتُ ٱلۡحَمِيرِ
Waqsid fee mashyika waghdud min sawtik; inna ankaral aswaati lasawtul hameer
English Translation
And be moderate in your pace and lower your voice; indeed, the most disagreeable of sounds is the voice of donkeys
— Saheeh International