Is it prohibited to be friends with atheists?
No, I do not think so. In fact, I think that one must find ways to develop friendship with them and induce them to ponder on certain basic questions of life. Who knows this might make them realise that they are wrong. In general, people who seem to have deviated from the right path deserve more sympathy and concern. A practising Muslim naturally feels disturbed when he sees such people. However, this disturbance should not drive him away from the person. In fact, it should kindle in him the spark to help his brother in seeking the truth. We should remember that deep down every person is the ingrained perception of God. People try to forget Him, but I don’t think that they really can. He continues to make His presence felt. So, if sincere efforts are made, a person can rediscover God.