In a Hadith, Rasoolillah(SAW) said: “The example of a good companion and a bad companion is like that of the seller of musk, and the one who blows the blacksmith’s bellows.. So as for the seller of musk then either he will grant you some, or you buy some from him, or at least you enjoy a pleasant smell from him. As for the one who blows the blacksmith’s bellows then either he will burn your clothes or you will get an offensive smell from him.” (Bukhari & Muslim)
In his commentary of this Hadith, Imam an-Nawawi said that the Prophet (SAW) compared a good companion to a seller of musk and spoke of the virtue of having companions who are good, who have noble manners, piety, knowledge and good culture. Such are those who grant us from their virtue. And he (SAW) forbade us to sit with those who do evil, commit a lot of sins and other bad deeds, as well as with innovators, backbiters, and so forth. Another scholar said: “keeping good company with the pious results in attainment of beneficial knowledge, noble manners and righteous actions, whereas keeping company with the wicked prevents all of that.” Many times a Muslim is encouraged by his friends to do evil and to forget his duties. The result is that Muslims themselves are often ashamed to leave them to perform prayer, their friends thus causing them to clearly deviate from the Right Path.
Allah(SWT) also says: “Friends on that Day will be enemies one to another, except al-Muttaqoon (i.e. those who have Taqwah).” (Surah 43: Ayah 67)
Hafidh Ibn Katheer, commenting on this verse, relates a story on the authority of Ali Ibn Abi Talib (RA) and says that any friendship for other than Allah is turned into enmity, except what was in it for Allah the Mighty and Majestic: “Two who are friends for Allah’s sake; one of them dies and is given good news that he will be granted al-Jannah, so he remembered his friend and he supplicated for him, saying: ‘O Allah, my friend used to command me to obey You and to obey Your Prophet (SAW) and used to command me to do good and to forbid me from doing evil. And he told me that I will meet You. O Allah, do not let him go astray after me, until you show him what you have just shown me, until You are satisfied with him, just like You are satisfied with me.’ So he is told: ‘Had you known what is (written) for you friend, would you have laughed a lot and cried a little.’ Then his friend dies and their souls are gathered, and both are asked to express their opinions about each other. So each one of them says to his friend: ‘You were the best brother, the best companion and the best friend.’ And when one of the two disbelieving friends dies, and he is given tidings of Hellfire, he remembered his friend and he said: ‘O Allah, my friend used to order me to disobey You and disobey Your Prophet, and commanded me to do evil, and forbade me from doing good, and told me that I would not meet You. O Allah, do not guide him after me, until you show him what you have just shown me and until you are dissatisfied with him just like You are dissatisfied with me.’ Then the other disbelieving friend dies, and their souls are gathered, and both are asked to give their opinions about each other. So each one says to his friend: ‘You were the worst brother, the worst companion and the worst friend.”
Ali (RA) said: “Mix with the noble people, you become one of them; and keep away from evil people to protect yourself from their evils.”
Ibn Hazm said: “Anyone who criticises you cares about your friendship. Anyone who makes light of your faults cares nothing about you.”
Zindeen 