Az-Zukhruf 43:89

Meccan · The Ornaments of Gold

فَٱصْفَحْ عَنْهُمْ وَقُلْ سَلَـٰمٌ ۚ فَسَوْفَ يَعْلَمُونَ

So turn aside from them and say, "Peace." But they are going to know