Islam includes some rules of conduct and encourages people to follow them in order to perfect their personality such as good manners, courtesy, respect, and appropriateness. They relate to everyday activities such as greeting, speaking, or eating.
Prophet Muhammad, peace and blessings of Allah be upon him, said: "The most beloved of Allah’s servants to Allah are those with the best manners." (Bukhari).
Islam recommends spreading and promoting the Islamic greeting of peace among people, as it builds love and trust among them. The Prophet Muhammed, peace and blessings of Allah be upon him, said: "By Him in Whose Hand my soul is! You will not enter Jannah until you believe, and you shall not believe until you love one another. May I inform you of something, if you do, you love each other. Promote greeting amongst you" (Abu Dawud).
" When you are greeted with a greeting, greet in return with what is better than it, or (at least) return it equally. Certainly, Allah is Ever a Careful Account Taker of all things." (Quran 4:86).
" The rider should first greet the pedestrian, and the pedestrian should greet those who are sitting and a small group should greet a larger group."(Bukhari).
Etiquette When Speaking:
While another person is speaking, you should have to listen and not interrupt, till he or she finishes. The Prophet Muhammad, peace and blessings of Allah be upon him, asked one of his companions on the day of the farewell pilgrimage: " to tell the people to keep silent, then he (the Prophet) said, "Do not revert to disbelief after me, chopping the heads of one another." (Al-Bukhari and Muslim).
The speaker should speak in clear words. The Prophet's wife Aishah, may Allah be pleased with her, said of his speech: "His speech was so clear that all those who listened to it would understand it." (Abu Dawud).
Furthermore, you should give a friendly face when you speak to people. The Prophet Muhammad, peace and blessings of Allah be upon him, said: " Do not disdain a good deed, (no matter how small it may seem) even if it is your meeting with your (Muslim) brother with a cheerful face." (Muslim).
The Prophet Muhammad, peace and blessings of Allah be upon him, said: " It is also charity to utter a good word." (Bukhari).
Etiquette when joking:
The Prophet Muhammad, peace and blessings of Allah be upon him, taught his companions that fun is allowed and harmless cheer were important in order to refresh the vitality of the soul. Nevertheless, when joking you have to stick to the prophetic motto of always telling the truth: His companions said to him: ‘O Messenger of Allah, are you teasing us?’ He said: ‘Yes, except that I am telling nothing but the truth” (Al -Tirmidhi).
He, peace and blessings of Allah be upon him, said: "Woe to him who tells things, speaking falsely, to make people laugh thereby. Woe to him! Woe to him!" (Abu Dawud).
A joke must not contain anything that harms or offends people. The Prophet, peace and blessings of Allah be upon him, said: " It is not permissible for a Muslim to frighten/scare another Muslim.'” [even if it is done in jest]." (Musnad Ahmed).
Etiquette when eating:
Before starting to eat, Muslims should say "Bismillahirrahmanirrahim" (In the name of Allah (God), the Most Gracious, the Most Merciful), After finishing they should say “Alhamdulillah” (thank God).
Muslims eat with their right hand and from the closest plate.
You should never reprimand or criticize food that is offered to you, no matter how it tastes. Abu Huraira, may Allah be pleased with him, reported that "the Prophet, peace and blessings of Allah be upon him, would never complain about food. If he liked something, he would eat it. If he disliked it, he would leave it". (Bukhari and Muslim).
When eating or drinking one should not overdo it, but only consume as much as the body needs:"…and eat and drink but waste not by extravagance, certainly He (Allah) likes not Al-Musrifun (those who waste by extravagance)". (Surah 7: Verse 31).
Regarding healthy eating, the Prophet, peace and blessings of Allah be upon him said: "The son of Adam cannot fill a vessel worse than his stomach, as it is enough for him to take a few bites to straighten his back. If he cannot do it, then he may fill it with a third of his food, a third of his drink, and a third of his breath". (Sahih Ibn Hibban).
Etiquette of the Roadway:
The Prophet, peace and blessings of Allah be upon him, said to his companions: “Beware of sitting on the roads, they asked:’ O Messenger of Allah, we gather and talk (in the streets), he (peace and blessings of Allah be upon him) said: ‘Give the street its right’. The Companions asked ‘what is its right O Messenger of Allah? He (peace and blessings of Allah be upon him) replied: “(That you) lower your gaze and refrain from harming (disrupting) the peace and to promote the ma’ruf (virtue and goodness) and prevent the munkar (vice and evil). “ (Abu Dawud).
Removing harm away from roads is one of the most important rights. Moreover, it was narrated that Abu Barzah, may Allaah be pleased with him, asked the Messenger of Allaah, peace and blessing be upon him, to teach him something so that he may derive benefit from it. Upon this he, peace and blessing be upon him, said: " Remove the troublesome thing from the paths of the Muslims." (Muslim).
At the same time there is punishment for those who deliberately harm Muslims in their roads and assemblies, the Prophet, peace and blessing of Allah be upon him, said: “Fear the things that bring curses.” They asked, “What are the two things that bring curses, O Messenger of Allaah?” He said: “When a person relieves himself in the road where people walk or in the place where they seek shade.” (Muslim).
Etiquette when buying and selling:
Trading is basically allowed because it is based on the mutual benefit of the buyer and seller. However, the business partner should never be harmed in the process. "O YOU who have attained to faith! Do not devour one another's possessions wrongfully - not even by way of trade based on mutual agreement - and do not destroy one another: for, behold, God is indeed a dispenser of grace unto you" (Surah 4: Verse 29).
The Prophet, peace and blessings be upon him, was asked, "What is the best of earnings?" He replied: "Nobody has ever eaten a better meal than that which one has earned by working with one's own hands. The Prophet of Allah, David used to eat from the earnings of his manual labor." (Bukhari) (Mustadrak).
The seller must point out defects in the goods, if there are any, The Prophet, peace and blessings of Allah be upon him, said: 'The Muslim is the brother of another Muslim, and it is not permissible for a Muslim to sell his brother goods in which there is a defect, without pointing that out to him." (Ibn Majah).
The Muslim should be generous in buying and selling. The Prophet, peace and blessings of Allah be upon him, said: "May Allah show mercy to a man who adopts a kind attitude when he sells, buys and demands for the repayment of loans." (Al-Bukhari).
When lying down to sleep, say (In the name of Allah, Most Gracious, Most Merciful) and turn on your right side.
Hudhaifa, may Allah be pleased with him, reported: When laying down on his bed every night, the Prophet peace and blessings of Allah be upon him, used to say “O Allah (SWT)! With your name I die and I live.” And when he When he awoke, he used to say, "Praise be to God ‘Allah’, who has given us life after causing us to die, and to whom we shall be resurrected."
One should try to go to bed early. It is narrated from the Prophet, peace and blessings of Allah be upon him, that "he disliked sleeping before evening prayer or talking after it." (Bukhari).