Manners

When the Messenger of Allah was asked about what most frequently makes people enter Paradise, he said, "Fear of Allah and good manners." (reported in Tirmidhi)

"And the servants of the Beneficent Allah are they who walk on the earth in humbleness, and when the ignorant address them, they say: Peace." (25:63)

"Manners are fundamental to Islam and to the life of a Muslim. In fact, from the very early days of Prophethood, the Prophet stressed the importance of good manners, even while he was busy teaching his Companions : about the importance of correct beliefs. Furthermore, the manifestations of good manners are not limited to a particular aspect of life, but rather are spread over to ever aspect, every facet, and every part of a person's life... when one does not see in himself outward manifestations of Islamic deeds and manners, or when one sees the opposite one certainly needs to ask the question: Where is the Emaan I claim to have? And if I do have Emaan, what benefit is it to me if it is not outwardly translated through good manners and deeds?" (The Noble Life of the Prophet, p. 302)

"Surely Allah enjoins the doing of justice and the doing of good (to others) and the giving to the kindred, and He forbids indecency and evil and rebellion; He admonishes you that you may be mindful." (16:90)