Sahih al-Bukhari 6040
صحيح البخاري#6040SahihNarrated Abu Huraira: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 then Gabriel would make an announcement among the residents of the Heaven, 'Allah loves so-and-so, therefore, you should love him also.' So, all the residents of the Heavens would love him and then he is granted the pleasure of the people of the earth
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 78:70