Commentary : In this hadith – of which it was said that it is a quarter of Islam and is one of the four hadiths from which good manners and characteristics stem – the Prophet (blessings and peace of Allah be upon him) explained that no Muslim can attain perfect faith – and the negation here does not mean that he is no longer a Muslim at all; rather it means that he has not attained perfect faith – until he loves for his brother what he loves for himself of good deeds and all types of goodness in both religious and worldly terms, and he dislikes for him what he dislikes for himself. So if he sees some shortcoming in the religious commitment of his Muslim brother, he strives to point it out and help him rectify it, and if he sees him doing good, he supports him and helps him to be steadfast in that and to do more. So the believer is not truly a believer until he likes for people what he likes for himself. That can only come from having a heart that is free of any rancour, ill feelings and envy, because envy leads to the envier hating to see anyone surpass him in anything good or even to see him equalling him in that, because he wants to be superior to people by means of what he has of virtues and achievements, and he wants to be the only one to stand out in that regard. But faith requires the opposite of that, which is to wish for all the believers to share with him in the blessings that Allah has bestowed upon him..