وَاقۡصِدۡ فِيۡ مَشۡيِكَ وَاغۡضُضۡ مِنۡ صَوۡتِكَؕ اِنَّ اَنۡكَرَ الۡاَصۡوَاتِ لَصَوۡتُ الۡحَمِيۡرِࣖ‏

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