(1) باب مَنِ اخْتَارَ الضَّرْبَ وَالْقَتْلَ وَالْهَوَانَ عَلَى الْكُفْرِ
Narrated Anas:
Allah's Messenger (ﷺ) said, "Whoever possesses the (following) three qualities will have the sweetness of faith (1): The one to whom Allah and His Apostle becomes dearer than anything else; (2) Who loves a person and he loves him only for Allah's Sake; (3) who hates to revert to atheism (disbelief) as he hates to be thrown into the Fire."
Reference: Sahih al-Bukhari 6941
In-book reference: Book 89, Hadith 2
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 9, Book 85, Hadith 74