As'salamu Alaikum dear brothers,
From
www.answering-christianity.com/quran_moral_code.htm:
The quotes below from the Glorious Quran were taken from the following Noble Verses: 4:36, 31:15, 18:37, 29:8, 31:15, 58:22, 34:46, 53:2, 81:22, 3:28, 3:118, 5:51, 5:57-59, 4:139, 9:23, 5:5, 3:199, 3:199, 3:113-114, 4:89, 2:193, 58:8-9, 29:46, 60:8, 5:8, 60:8, 5:2, 4:58, 4:135, 7:159, 5:44, 2:62, 3:134, 7:199, 15:85, 5:13, 2:109, 24:22, 45:14, 76:7-10, 90:11-17, 2:177, 2:215, 17:26, 38:26, 42:42.
You may take a disbeliever as a companion
? (saahib). A
? can be your neighbor, workmate, classmate, friend (he is not a brother in faith)

? 

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?? 

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?. See Noble Verse
4:36.
Even if your parents relentlessly call you to become an
apostate or an infidel, do not follow them, but still be kind to them and be their companion
? (saahib).

??
? ??
?? ?? ??


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. See Noble Verse
31:15.
A
? (saahib) can be a disbeliever (
18:37):
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??

??
??
? ??
? ?? ??
? ??
?
?.
Also, Prophet Muhammad, peace be upon him, was addressed as the
? (saahib) of the both the believers and disbelievers in Noble Verses
34:46, 53:2, 81:22.
A Muslim man can also marry a Jewish or Christian woman. Also, some of the people of the Book (Jews and Christians) are from among the blessed ones. See Noble Verses
5:5, 3:199, 3:113-114. More proof that having a life friendship with disbelievers is permitted.
However, the disbelievers may not be your allies without or against the Believers. And if he's hostile towards Islam, then you must end your relationship with him (
4:89, 2:193, 58:8-9, 29:46, 60:8 ).
Be forgiving to those who disagree with your faith who are not hostile. Show kindness to them. Pardon people. Restrain your anger. And be just. See Noble Verses
5:8, 60:8, 5:2, 4:58, 4:135, 7:159, 5:44, 2:62, 3:134, 7:199, 15:85, 5:13, 2:109, 24:22, 45:14, 76:7-10, 90:11-17, 2:177, 2:215, 17:26, 38:26, 42:42.
I hope this helps, insha'Allah.
Take care,
Osama Abdallah