In The Name of Allah, The Most Merciful, The Bestower of Mercy.

The Importance of Upright Friendship

Allah said:
الْأَخِلَّاءُ يَوْمَئِذٍ بَعْضُهُمْ لِبَعْضٍ عَدُوٌّ إِلَّا الْمُتَّقِينَ

Bosom friends on that Day will be foes one to another except for the pious. [Al-Zukhruf 67]

Meaning on the Day of Judgment, those who established close friendships upon disbelief, disobedience to Allah and rejection (i.e. belied guidance), “Will be foes one to another” because their close friendships and love in the worldly life were for other than Allah, thus, they will turn into enmity on the Day of Judgment.

“Except for the pious”, who avoided Shirk and disobedience, for indeed their love for one another will endure and remain.

وَقَالَ إِنَّمَا ٱتَّخَذۡتُم مِّن دُونِ ٱللَّهِ أَوۡثَـٰنً۬ا مَّوَدَّةَ بَيۡنِكُمۡ فِى ٱلۡحَيَوٰةِ ٱلدُّنۡيَا‌ۖ ثُمَّ يَوۡمَ ٱلۡقِيَـٰمَةِ يَكۡفُرُ بَعۡضُڪُم بِبَعۡضٍ۬ وَيَلۡعَنُ بَعۡضُڪُم بَعۡضً۬ا وَمَأۡوَٮٰكُمُ ٱلنَّارُ وَمَا لَڪُم مِّن نَّـٰصِرِينَ

And (Ibrahim) said: “You have taken (for worship) idols instead of Allah, and the love between you is only in the life of this world, but on the Day of Resurrection, you shall disown each other, and curse each other, and your abode will be the Fire, and you shall have no helper.” [Al-Ankabut 25]

How can they attach themselves to someone who is aware that he will free himself from those who worshipped him and curse them?! [Tafsir As-Sadi]

Love and Hate Moderately

Abu Hurairah, may Allah be pleased with him, narrated that the prophet, peace and blessings of Allah be upon him, said: “Love your beloved one modestly, for it may be that he will become hated to you someday. And hate the one whom you hate modestly, for it may be that he will become your beloved one someday”.

Al-Allaamah Ibn Al-Atheer, may Allah have mercy upon him, stated:

“This means that you should love your beloved one with moderation and do not go beyond bounds. Do not go into extremes in your love and hate, for it may be that one day you’ll hate the one you used to love and love the one you used to hate. Therefore, neither exaggerate in your love and become regretful (in future), nor exaggerate in your hatred and thus become shy in the presence of the one you used to hate after you stop hating him”. [An-Nihaayah 5/284]

Treat Others Fairly

Abdullah Bin Amr, may Allah be pleased with him, reported that Allah’s Messenger, peace and blessings of Allah be upon him, said, “Whoever would love to be delivered from Hellfire and admitted into Paradise, let him meet his end whilst believing in Allah and the Last Day, and let him treat people as he would love to be treated”. [Ṣaḥih Muslim 1844]

Imam An-Nawawi, may Allah have mercy upon him, said: This is from the Jawami al-Kalim of the Prophet [i.e. precise speech with a comprehensive meaning] and his amazing wisdom. It is obligatory to pay close attention to this important principle and that a person must not deal with the people except in a way he loves to be dealt with. [Sharh Sahih Muslim 12/196]

Al-Allamah Zaid Bin hadi al-Mad’khali, may Allah have mercy upon him, said:

A Muslim is to give consideration to his Muslim brothers in the same way he would give consideration to himself- wishing for them the good he wishes for himself and hates that evil should touch them just as he hates that for himself. The one who loves that the people should approach him with good related to the worldly matters and the Afterlife, it is obligated to him to do the same for them, so that the statement of the Prophet, peace and blessings of Allah be upon him, “You cannot (truly) believe until you wish for your brother what you wish for yourself” becomes a reality in his personality; and also the statement of the Prophet: “The believer in relation to another believer is like a structure, each part strengthening the other”, and also the statement of the Prophet, “The Muslim is the brother of another Muslim”. Whoever is able to have these characteristics, then indeed he has established Iman (in this matter), good manners and dealings. [at-Ta’liqat Al-Malihah Alaa Silsila Al-Ahadith As-Sahihah 2/29-33]

Sincere Advice

Sincere advice, especially when urgently needed, cannot be concealed even for the sake of close or real friendship