Abu Hurairah (radiallaahu `anhu) reported: That the Prophet (sallallaahu `alayhi wa sallaam) said, “When Allaah loves a slave, calls out Jibril and says: I love so-and-so:so love him. ” Then Jibril loves him. After that he (Jibril) announces to the inhabitants of heavens that Allaah loves so-and-so; so love him; and the inhabitants of the heavens (the angels) also love him and then make people on earth love him. [Al-Bukhari and Muslim]
Another narration of Muslim is:Messenger of Allah `sallallahu alaihi wa sallam said: When a Allaah loves a slave, He calls Jibril (Gabriel) and says: “I love so-and-so; so love him.”And then Jibril loves him.Then he (Jibril) announces in the heaven saying: Allaah loves so-and-so; so love him; then the inhabitants of the heavens (the angels) also love him;and the people on earth love him.And when Allah hates a slave,He calls Jibril and says: “I hate so-and-so,so hate him.” Then Jibril also hates him. He (Jibril) then announces amongst the inhabitants of heavens: Verily, Allaah hates so-and-so, so you also hate him. “Then he becomes the object of hatred on the earth also.” [Al-Bukhari and Muslim]
Commentary: This Hadith mentions the reward of love for the sake of Allaah. A person who loves for the sake of Allaah is not only loved by Allaah but also by the inhabitants of the earth as well as the heavens. On the other hand, those who are hated by Allaah are also hated by the inhabitants of the earth and the heavens. It must be bore in mind that they alone remain popular in this world who are righteous by nature-who strictly maintain the distinction between the lawful and the unlawful (Ma’ruf and Munkar). But those whose nature is defected by constant sins, cease to distinguish between right and wrong and lose their credibility. They generally hate the pious persons for the reason that every category of people loves and likes people of his own kind.