قَالُوا۟ بَشَّرْنَـٰكَ بِٱلْحَقِّ فَلَا تَكُن مِّنَ ٱلْقَـٰنِطِينَ

EnglishSaheeh International: They said, "We have given you good tidings in truth, so do not be of the despairing."
TamilJan Trust Foundation: அதற்கவர்கள், "மெய்யாகவே, நாங்கள் உமக்கு நன்மாராயங் கூறினோம்; ஆகவே நீர் (அதுபற்றி) நிராசை கொண்டோரில் ஒருவராகி விடாதீர்!" என்று கூறினார்கள்.
SinhalaRuwwad Center: අපි නුඹට සැබෑව ශුභාරංචි වශයෙන් දන්වා සිටියෙමු. එහෙයින් නුඹ අපේක්ෂා රහිත වූවන් අතරින් නො වනු.
UrduMaulana Muhammad Junagarhi: انہوں نے کہا ہم آپ کو بالکل سچی خوشخبری سناتے ہیں آپ مایوس لوگوں میں شامل نہ ہوں.
JapaneseRyoichi Mita: かれらは言った。「わたしたちは，真理によって吉報をあなたに伝える。だから失望してはならない。」
ChineseMa Jian: 他们说：我们凭真理而向你报喜，所以你不要绝望。

Tafsir of 15:55

The Guests of Ibrahim and their Good News of a Son for Him Allah is saying: `Tell them, O Muhammad, about the story of ضَيْفِ إِبْرَاهِيمَ (the guests of Ibrahim.)' دَخَلُواْ عَلَيْهِ فَقَالُواْ سَلامًا قَالَ إِنَّا مِنْكُمْ وَجِلُونَ (they entered upon him, and said: "Salaman (peace!)." He said: "Indeed we are frightened of you.") meaning that they were scared. The reason for their fear has been mentioned previously, which is that they noticed that these guests did not eat of the food that was offered, which was a fattened calf. قَالُواْ لاَ تَوْجَلْ (They said: "Do not be afraid!...") meaning, do not be scared. وَبَشَّرُوهُ بِغُلَمٍ عَلَيمٍ (We bring you the good news of a boy possessing much knowledge and wisdom.) this refers to Ishaq, as was previously mentioned in Surat Hud.…

Source: Ibn Kathir (Abridged)