Narrated Anas: The Prophet said,
"Whoever possesses the following three qualities will have the sweetness (delight) of faith:
1. The one to whom Allah and His Apostle becomes dearer than anything else.
2. Who loves a person and he loves him only for Allah's sake.
3. Who hates to revert to Atheism (disbelief) as he hates to be thrown into the fire."
(Sahih Bukhari: Book #2, Hadith #15)
Narrated Abu Burda: That his father said,
The Prophet sent Mu'adh and Abu Musa to Yemen telling them. 'Treat the people with ease and don't be hard on them; give them glad tidings and don't fill them with aversion;
and love each other, and don't differ.
(Sahih Bukhari: Book #52, Hadith #275)
Abu Huraira reported Allah's Messenger (may peace be upon him) as saying:
Verily. Allah would say on the Day of Resurrection: Where are those who have mutual love for My Glory's sake? Today I shall shelter them in My shadow when there is no other shadow but the shadow of Mine.
(Sahih Muslim: Book #032, Hadith #6225)
But those who believe are stronger in love for Allah . And if only they who have wronged would consider [that] when they see the punishment, [they will be certain] that all power belongs to Allah and that Allah is severe in punishment.
(Quran 2:165)