Friendship is always good as far as you protect yourself from bad influence which can come through mixing with people who don't share your faith and religion. If you are sure that friendship with non- believers will not influence your thoughts, faith and practice, then it will be allowed. But you must be alerted and very careful as thousands before you have suffered heavy damages due to friendship with non believers which made them look at life like non believers and behave like their friends.

'Real believer is supposed to be strong enough in his faith and religion, that he can influence the non -believers and make them understand the truth and follow it.

'This is a positive friendship which maintains your faith and religion and helps non believers to benefit from you. Negative friendship is the friendship which makes you lose anything from your faith, religion and practice..

'Wassalam.