إِذْ دَخَلُوا۟ عَلَيْهِ فَقَالُوا۟ سَلَـٰمًا ۖ قَالَ سَلَـٰمٌ قَوْمٌ مُّنكَرُونَ

EnglishSaheeh International: When they entered upon him and said, "[We greet you with] peace." He answered, "[And upon you] peace; [you are] a people unknown."
TamilJan Trust Foundation: அவர்கள், அவரிடம் பிரவேசித்த போது, (அவரை நோக்கி; "உங்களுக்கு) "ஸலாம்' என்று கூறினார்கள்; (அதற்கவர்), "(உங்களுக்கு) "ஸலாம்" என்று கூறினார். "இவர்கள் (நமக்கு) அறிமுகமில்லா சமூகத்தாராக (இருக்கின்றார்களே" என்று எண்ணிக் கொண்டார்).
SinhalaRuwwad Center: ඔවුහු ඔහු වෙත පිවිසුණු අවස්ථාවේ ඔවුහු සලාම් (සාමය) යැයි පැවසුවෝ ය. ඔහු ද සලාම් (සාමයයි) පැවසී ය. (මොවුහු) නාඳුනන පිරිසකි (යැයි ඉබ්රාහීම් සිතුවේ ය.)
UrduMaulana Muhammad Junagarhi: وه جب ان کے ہاں آئے تو سلام کیا، ابراہیم نے جواب سلام دیا (اور کہا یہ تو) اجنبی لوگ ہیں.
JapaneseRyoichi Mita: かれらはかれ（イブラーヒーム）の家に入って，「平安あれ。」と言った時，かれも「平安あれ。見知らぬ方々よ。」と答えた。
ChineseMa Jian: 当时，他们进去见他，他们说：祝你平安！他说：祝你们平安！他想这些是生客。

Tafsir of 51:25

The Guests of the Prophet Ibrahim We mentioned this story before in Surah Hud and Al-Hijr. Allah said, هَلْ أَتَاكَ حَدِيثُ ضَيْفِ إِبْرَهِيمَ الْمُكْرَمِينَ (Has the story reached you, of the honored guests of Ibrahim), whom Ibrahim honored and who, قَالُواْ سَلَماً قَالَ سَلَمٌ (they said: "Salaman!" He answered: "Salamun.") وَإِذَا حُيِّيتُم بِتَحِيَّةٍ فَحَيُّواْ بِأَحْسَنَ مِنْهَآ أَوْ رُدُّوهَآ (When you are greeted with a greeting, greet in return with what is better than it, or return it equally.)(4:86) So the Friend of Allah chose a better reply in return for their greeting, implementing Allah's command: Reciprocating the greeting with the term Salamun is stronger than the greeting using the term Salaman. The three angels; Jibril, Mika'il and Israfil came to Ibrahim in the image of handsome young wonderfully graceful men.…

Source: Ibn Kathir (Abridged)