Qur'ān 51:25 · Adh-Dhariyat (الذاريات)

إِذْ دَخَلُوا۟ عَلَيْهِ فَقَالُوا۟ سَلَـٰمًۭا ۖ قَالَ سَلَـٰمٌۭ قَوْمٌۭ مُّنكَرُونَ

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