Anas bin Malik reported,

The Prophet ﷺ said, "There are three qualities, whoever possesses them will taste the sweetness of faith. That Allah and His Messenger are more beloved to him than anything else, that he loves a person solely for the sake of Allah عز وجل, and that he hates to return to disbelief after Allah has rescued him from it as much as he would hate to be cast into the fire."

Bukhari 21

Sahih

حدثنا سليمان بن حرب قال حدثنا شعبة عن قتادة

عن أنس بن مالك رضي الله عنه

عن النبي ﷺ قال ثلاث من كن فيه وجد حلاوة الإيمان من كان الله ورسوله أحب إليه مما سواهما ومن أحب عبدا لا يحبه إلا لله عز وجل ومن يكره أن يعود في الكفر بعد إذ أنقذه الله منه كما يكره أن يلقى في النار

البخاري 21صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Bukhari
Book
Faith
Chapter
One who hates to return to disbelief as he hates to be thrown into the Fire is from faith
Numbering
Darussalam 21
Bukhari 21