I love you for the sake of Allah
Anas ibn Malik (May Allah be pleased with him) reported:
A man was with the Prophet (may the peace and blessibgs of Allah be upon him) when another man passed by and the former said: "O Messenger of Allah! I love this man (for Allah's sake)". The Messenger of Allah (may the peace and blessibgs of Allah be upon him) asked, "Have you informed him?" He said: "No". The Messenger of Allah (may the peace and blessibgs of Allah be upon him) then said, "Tell him (that you love him)". So he went up to the man and said to him, "I love you for the sake of Allah;" and the other replied, "May Allah, for Whose sake you love me, love you."
[Abu Dawud]
The love for the sake of Allah the Almighty is not attained except to those whose hearts are pure, those who are praised by people, those who are keen to learn the rules of Islam, and those whose natural inclination is free from the suspecions. These qualities rarely gather in a soul of our time, but they frequently gathered in the companions of the Prophet, may Allah be pleased with them, then in those who followed them.
The hearts of the companions of the Prophet, may Allah be pleased with them, were devoid from all that disturbs the light of faith, and the certainty, so that they loved each other for the sake of Allah - they gathered on it and departed on it, and lived with it embracing each other so that each one prefers his brother over himself even if he is in need.
The brotherhood between them was achieved by the word of Allah the Almighty, so that the emigrants dissolved in each other, and the Ansar dissolved in each other, and then the immigrants and Ansar dissolved in one milting pot, they all cooperated with love on righteousness and piety, they were consistent with each other and agreed on a word that is equitable to worship none except Allah and not associate anything with Him and not take one another as lords instead of Allah.
Since love is the most important thing in life, the Prophet ( may the peace and blessings of Allah be upon him) recommended showing it to the beloved and expressing it with the relevant words and deeds, to deepen it in the soul more and more.
The Messenger of Allah (may the peace and blessibgs of Allah be upon him) said: "Tell him (that you love him)". Because if he tells him that he loves him, his brother will exchange love with him, and they will have good relations and close bonds which often lead to constructive cooperation between them and their families.
In this world, love for the sake of Allah gathers the lovers on the guidance, and then it will gather them in the highest ranks of the heavens in the Hereafter.
Love for the sake of Allah has fruits earned by the lovers as long as the love exists between them.
One of the greatest fruits is the sense of sweetness of faith which flow in the hearts like the blood flows in the veins so that the body is refreshed.
It is taken from this Hadeeth: that whoever loves a person for a worldly life purpose, then he shall free himself from this purpose and establish his love for the sake of Allah so that he attains the virtue of this noble love, and that his heart tastes the sweetness of this love.
Love for the sake of Allah is perfect and permanent. Otherwise, it will not be sincere for Allah alone. How great is this love, and how beautiful are its effects and fruits.