Al-Furqan 25:63

WaAAibadu arrahmaniallatheena yamshoona AAala al-ardi hawnanwa-itha khatabahumu aljahiloona qaloosalama

And the servants of the Most Merciful are those who walk upon the earth easily, and when the ignorant address them [harshly], they say [words of] peace,

The servants of the RaHmān (the All-Merciful, Allah) are those who walk on the earth humbly, and when the ignorant people speak to them, they reply peacefully,