The Prophet ﷺ said, "If Allah loves a person, He calls Gabriel saying, 'Allah loves so and-so; O Gabriel! Love him.' Gabriel would love him and make an announcement amongst the inhabitants of the Heaven. 'Allah loves so-and-so, therefore you should love him also,' and so all the inhabitants of the Heaven would love him, and then he is granted the pleasure of the people on the earth." (Using translation from Bukhārī 3209)
"إذا أحبَّ الله ﷻ عبدًا نادى جبريلَ: إن الله يحبُّ فلانًا فأحببه، فيحبُّه جبريلُ، فينادى جبريلُ في أهل السماءِ: إن الله يحبُّ فلانًا فأحبوه، فيحبُّه أهلُ السماءِ، ثمَّ يوضَعُ له القَبولُ في الأرضِ".