1. Do you know the Quranic verses on Good behaviour?

السلام عليكم ورحمة الله وبركاتة 

 بِسْمِ ٱللَّٰهِ ٱلرَّحْمَٰنِٱلرَّحِيمِ

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. {An-Nisa, 4:86].

O you who believe! Enter not houses other than your own, until you have asked permission and greeted those in them, that is better for you, in order that you may remember. [An-Noor, 24:27].

And if you find no one therein, still, enter not until permission has been given. And if you are asked to go back, go back, for it is purer for you, and Allah is All-Knower of what you do. [An-Noor, 24:28].

There is no sin on you that you enter (without taking permission) houses uninhabited (i.e. not possessed by anybody), (when) you have any interest in them. And Allah has knowledge of what you reveal and what you conceal. [An-Noor, 24:29[.

Tell the believing men to lower their gaze (from looking at forbidden things), and protect their private parts (from illegal sexual acts, etc.). That is purer for them. Verily, Allah is All-Aware of what they do. [An-Noor, 24:30].

And tell the believing women to lower their gaze (from looking at forbidden things), and protect their private parts (from illegal sexual acts, etc.) and not to show off their adornment except only that which is apparent (like palms of hands or one eye or both eyes for necessity to see the way, or outer dress like veil, gloves, head-cover, apron, etc.), and to draw their veils all over Juyubihinna (i.e. their bodies, faces, necks and bosoms, etc.) and not to reveal their adornment except to their husbands, their fathers, their husband's fathers, their sons, their husband's sons, their brothers or their brother's sons, or their sister's sons, or their (Muslim) women (i.e. their sisters in Islam), or the (female) slaves whom their right hands possess, or old male servants who lack vigour, or small children who have no sense of the shame of sex. And let them not stamp their feet so as to reveal what they hide of their adornment. And all of you beg Allah to forgive you all, O believers, that you may be successful. [An-Noor, 24:31].

O you who believe! Let your legal slaves and slave-girls, and those among you who have not come to the age of puberty ask your permission (before they come to your presence) on three occasions; before Fajr (morning) prayer, and while you put off your clothes for the noonday (rest), and after the 'Isha' (late-night) prayer. (These) three times are of privacy for you, other than these times there is no sin on you or on them to move about, attending (helping) you each other. Thus Allah makes clear the Ayath (the Verses of this Quran, showing proofs for the legal aspects of permission for visits, etc.) to you. And Allah is All-Knowing, All-Wise. [An-Noor, 24:58].

And when the children among you come to puberty, then let them (also) ask for permission, as those senior to them (in age). Thus Allah makes clear His Ayath (Commandments and legal obligations) for you. And Allah is All-Knowing, All-Wise. [An-Noor, 24:59].

And as for women past child-bearing who do not expect wed-lock, it is no sin on them if they discard their (outer) clothing in such a way as not to show their adornment. But to refrain (i.e. not to discard their outer clothing) is better for them. And Allah is All-Hearer, All-Knower. [An-Noor, 24:60]

There is no restriction on the blind, nor any restriction on the lame, nor any restriction on the sick, nor on yourselves, if you eat from your houses, or the houses of your fathers, or the houses of your mothers, or the houses of your brothers, or the houses of your sisters, or the houses of your father's brothers, or the houses of your father's sisters, or the houses of your mother's brothers, or the houses of your mother's sisters, or (from that) whereof you hold keys, or (from the house) of a friend. No sin on you whether you eat together or apart. But when you enter the houses, greet one another with a greeting from Allah (i.e. say: As-Salamu 'Alaikum - peace be on you) blessed and good. Thus Allah makes clear the Ayath (these Verses or your religious symbols and signs, etc.) to you that you may understand. {An-Noor, 24:61].

O you who believe! Enter not the Prophet ﷺ's houses, except when leave is given to you for a meal, (and then) not (so early as) to wait for its preparation. But when you are invited, enter, and when you have taken your meal, disperse, without sitting for a talk. Verily, such (behaviour) annoys the Prophet ﷺ, and he is shy of (asking) you (to go), but Allah is not shy of (telling you) the truth. {Al-Ahzab, 33:53]. [This ayath even though said with reference to our Prophet {SAW} it applies to all of us on similar occasions].

O you who believe! When you are told to make room in the assemblies, (spread out and) make room. Allah will give you (ample) room (from His Mercy). And when you are told to rise up [for prayers, Jihad (holy fighting in Allah's Cause), or for any other good deed], rise up. Allah will exalt in degree those of you who believe, and those who have been granted knowledge. And Allah is Well-Acquainted with what you do. [Al-Mujadila, 58:11].

O you who believe! If a rebellious evil person comes to you with a news, verify it, lest you harm people in ignorance, and afterwards you become regretful to what you have done. [Al-Hujraat, 49:6].

O you who believe! Let not a group scoff at another group, it may be that the latter are better than the former; nor let (some) women scoff at other women, it may be that the latter are better than the former, nor defame one another, nor insult one another by nicknames. How bad is it, to insult one's brother after having Faith [i.e. to call your Muslim brother (a faithful believer) as: "O sinner", or "O wicked", etc.]. And whosoever does not repent, then such are indeed Zalimun (wrong-doers, etc.). [Al-Hujraat, 49:11]

O you who believe! Let not your properties or your children divert you from the remembrance of Allah. And whosoever does that, then they are the losers. [Al-Munafiqoon, 63:9]

الحمدلله