[25].Surah Al-Furqan [The Criterion]: Ayat 27-28

২৭. জালেম সেদিন আপন হস্তদ্বয় দংশন করতে করতে বলবে, হায় আফসোস! আমি যদি রসূলের সাথে পথ অবলম্বন করতাম।
২৮. হায় আমার দূর্ভাগ্য, আমি যদি অমুককে বন্ধুরূপে গ্রহণ না করতাম। 

Ayat 27. And (remember) the Day when the Zalim (wrong-doer, oppressor, polytheist, etc.) will bite at his hands, he will say: "Oh! Would that I had taken a path with the Messenger ( Muhammad  SAWW(PBUH).

Ayat 28. "Ah! Woe to me! Would that I had never taken so-and-so as a friend!

[Tafseer] of Ayat 27. The Day that the wrong-doer will bite at his hands, he will say, "Oh! would that I had taken a (straight) path with the Messenger! The words are general, and for us the interest is in a general sense. A man who actually receives the Truth and is on the right path is all the more culpable if he is diverted from that path by the machinations of a worldly friend. The particular person whom some Commentators mention in this connection was one 'Uqbah who received the light of Islam, but was misled afterwards by a worldly friend into apostasy and blasphemy. He came to an evil end afterwards. [Tafseer] of Ayat 28. "Ah! woe is me! Would that I had never taken such a one for a friend!

Hazrat Abu Saeed Khudri (May Allah be pleased with him) reported: The Messenger of Allah [SAWW](PBUH) said, "Keep only a believer for a companion and let only a pious eat your food".    [At-Tirmidhi Hadith # 2395 and Abu Dawud, Hadith # 4832]. 

Lesson : as mentioned above in Surah Al-Furqan Ayat 28."Woe to me! Would that I had never taken so-and-so as a friend" This Hadith forbids Muslims from befriending infidels and stresses that they should establish a bond of friendship and fraternity with the pious persons only. The above Hadith signifies that taking believers for company has good consequences on the Muslim. While feeding only pious people compels the Muslim host to provide only Halal or lawful foodstuff for his household as well as his guests.