وَٱقۡصِدۡ فِي مَشۡيِكَ وَٱغۡضُضۡ مِن صَوۡتِكَۚ إِنَّ أَنكَرَ ٱلۡأَصۡوَٰتِ لَصَوۡتُ ٱلۡحَمِيرِ ١٩
Waqṣid fī mashyika waghḍuḍ min ṣawtik, inna ankaral-aṣwāti laṣawtul-ḥamīr.
And be moderate in your pace and lower your voice; indeed, the most disagreeable of sounds is the voice of donkeys."
Translation: Sahih International