The most perfect believer in his faith is the one who has the most excellent manners, and the best of you are those who are best to their wives [At-Tirmidhi]
"«أكمل المؤمنين إيمانا أحسنهم خلقا، وخياركم خياركم لنسائهم». [حسن.] - [رواه أبو داود والترمذي والدارمي وأحمد.]"