كتاب المقدمات
1
The Book of Miscellany
Abu Hurairah (May Allah be pleased with him) reported:
Messenger of Allah (ﷺ) said, "The most perfect man in his faith among the believers is the one whose behaviour is most excellent; and the best of you are those who are the best to their wives."

[At- Tirmidhi].

وعنه قال رسول الله صلى الله عليه وسلم‏:‏ “أكمل المؤمنين إيماناً أحسنهم خلقاً وخياركم خياركم لنسائهم”‏.‏ ‏(‏‏(‏رواه الترمذي وقال‏:‏ حديث حسن صحيح‏)‏‏)‏‏.‏
Arabic/English book reference : Book 1, Hadith 628