اِذۡ دَخَلُوۡا عَلَيۡهِ فَقَالُوۡا سَلٰمًاؕ قَالَ سَلٰمٌۚ قَوۡمٌ مُّنۡكَرُوۡنَ

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