Sura 25 Al-Furqan (The Criterion), aya 63

1. وَعِبَادُ الرَّحْمَٰنِ الَّذِينَ يَمْشُونَ عَلَى الْأَرْضِ هَوْنًا وَإِذَا خَاطَبَهُمُ الْجَاهِلُونَ قَالُوا سَلَامًا

   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,

   25:63

Tafsiri: Saheeh International