Surah Adh-Dhariyat 51:25

إِذْ دَخَلُوا۟ عَلَيْهِ فَقَالُوا۟ سَلَـٰمًا ۖ قَالَ سَلَـٰمٌ قَوْمٌ مُّنكَرُونَ

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

Translation: Saheeh International

Tafsir

When idh is an adverbial qualifier of hadīthu dayfi ‘the story of the guests’ they entered upon him and said ‘Peace!’ — in other words they said these very words. …

Excerpt from Tafsir al-Jalalayn, commentary on 51:25, via Quran.com. The reader has the full commentary and 9 more tafsirs.