The most perfect man in faith
The Prophet (sal Allahu alaihi wa sallam) said, “The most perfect man in his faith among the believers is the one whose behavior is most excellent; and the best of you are those who are the best to their wives.”
This Hadith brings into light the consequence and results of true Eman (faith/belief) and complaisant manners.
We may put it in this way that the degree of a man’s excellent behavior determines the degree of his Eman (faith/belief). Or the high level of Eman calls for a high level of morals. Similarly, a man who is polite and courteous to his wife will be considered as the best.
And Allah knows best!