There is also the coffee house companion, the sports companion, and many other different categories of companions. Your relationship with some of them might last for long until you start calling them ‘friends’, but they are not friends. You neither picked them willingly to be your friends nor chose their companionship, but life put them in your way and burdened you with them. If you do not conduct an inventory of them the way a merchant conducts an inventory of his merchandise then you vet them and only keep the good ones and cast away the bad ones, you would not know down which abyss such friendships lead you. A companion drags his companions down the path he is treading, and they tend to follow his example.

You may accompany a person down a path or a journey or know him from work and interact with him friendly as courteously as a well-mannered person should interact with others while being unaware of his life. He would become associated with you, and he becomes known as your “friend,” and his evils would affect you accordingly. You may be harmed by such association, and he may become a source of disgrace to you. He may also influence you in a way you are unaware of. Every word you hear can be likened to a seed thrown into a fertile land; it may be a good seed that generates goodness within you, or an evil one that gives rise to evil within you. Many righteous people were corrupted because they kept the company of a wicked person who changed their state drastically and made life misery for them. Conversely, many wicked people were rectified and became righteous because they kept the company of the righteous. A person may be safe from his sinful urges on his own and distract himself from them with knowledge or art, or practicing spiritual or physical exercise, but a wicked companion may come along, out of the blue, to trigger such sinful urges within him and cause him to taste their bitterness.

Female Quran Teacher