Qur'an 51:25 · Adh-Dhaariyat

إِذْ دَخَلُوا۟ عَلَيْهِ فَقَالُوا۟ سَلَٰمًۭا ۖ قَالَ سَلَٰمٌۭ قَوْمٌۭ مُّنكَرُونَ

(25) When they entered upon him and said, "[We greet you with] peace." He answered, "[And upon you] peace; [you are] a people unknown."