Allah Most High says: "He who is hostile to a friend of Mine I declare war against. My slave approaches Me with nothing more beloved to Me than what I have made obligatory upon him, and My slave keeps drawing nearer to Me with voluntary works until I love him. And when I love him, I am his hearing with which he hears, his sight with which he sees, his hand with which he seizes, and his foot with which he walks. If he asks me, I will surely give to him, and if he seeks refuge in Me, I will surely protect him"

(Sahih Bukhari - Fath al-Bari, 11.340 41, hadith 6502) [src: suhba.org]

A man asked the Prophet about the Hour (i.e. Day of Judgment) saying, "When will the Hour be?" The Prophet said, "What have you prepared for it?" The man said, "Nothing, except that I love Allah and His Apostle." The Prophet said, "You will be with those whom you love." We had never been so glad as we were on hearing that saying of the Prophet (i.e., "You will be with those whom you love.") Therefore, I love the Prophet, Abu Bakr and 'Umar, and I hope that I will be with them beCause of my love for them though my deeds are not similar to theirs.

(Narrated by Anas - al-Buhkhari 5.37) [src: alim.org]