Strive for perfection not only in beliefs but also actions and interactions with other people .

This hadith, narrated by Abu Hurairah, speaks to the importance of having good manners as a signifier for a person's faith. It suggests that having good manners and being kind to others are essential components for being a true believer. The Prophet Muhammad ﷺ taught that those who have strong faith will also have strong morals and values which they demonstrate through their behavior towards others. This hadith encourages believers to strive for perfection not only in their beliefs but also in their actions and interactions with other people.