Abu Hurayrah (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: "If Allah, the Almighty, loves a slave, He calls out to Jibrīl and says: 'Verily, Allah, the Almighty, loves so-and-so; so love him.' So, Jibrīl loves him and announces to the inhabitants of the heavens: 'Verily, Allah loves so- and-so; so love him;' and the inhabitants of the heavens (the angels), thus, love him, and then he is granted acceptance on earth." A narration of Muslim reads: The Messenger of Allah (may Allah's peace and blessings be upon him) said: "Verily, if Allah, the Almighty, loves a slave, He calls Jibrīl and says: 'I love so-and-so; so love him.' Jibrīl, thus, loves him. Then Jibrīl announces in the heavens saying: 'Allah loves so-and-so; so love him;' then the inhabitants of the heavens (the angels) also love him; and then he is granted acceptance on earth. And if Allah hates a slave, He calls Jibrīl and says: 'I hate so- and-so, so hate him.' Jibrīl, thus, hates him. Then Jibrīl announces among the inhabitants of the heavens: 'Allah hates so- and-so, so hate him.' Then he becomes the object of hatred on earth."
Authentic hadith - Narrated by Bukhari & Muslim