The Messenger of Allah (peace and blessings upon him) said:
«ليس المؤمنُ بالطَّعَّانِ ولا باللَّعَّانِ. ولا بالفاحشِ ولا بالبذيءِ»
“
The true believer is not a slanderer, nor does he curse others, and nor is he immoral or shameless.” [Related by At-Tirmidhi]
Allah Almighty says in the Quran:
“
And speak to people good [words]” (Quran 2:83)
The heart that knows and remembers Allah-The Source of Peace, Source of Purity- accordingly emanates beauty and goodness because Allah is the Source of all Beauty and Goodness. A beautiful tongue is a reflection of a beautiful heart. One must have a beautiful tongue and say only good, beautiful things to people. It is a great sign of true belief.
The Messenger of Allah (peace and blessings upon him) said:
He who believes in Allah and the Last Day let him speak good or remain silent”. [
Al- Bukhari and Muslim].
Saying hurtful things to people deeply affects their hearts and could ruin their mood and their day. We’re not allowed to interrupt the peace of other people’s heart and day by words that aren’t good.
http://www.radioislam.org.za/a/inde...n-of-abusive-language-insults-and-curses.html
Allah taught us:
“
And tell My servants to say that which is best. Indeed, Satan induces [dissension] among them. Indeed Satan is ever, to mankind, a clear enemy.” (Quran 17: 53)
Throwing bad and hurtful words at one another will only result in further ugly words and further disagreement, lack of peace and stability of heart and mind. This is the environment that Satan wants for us; disagreement, distraction and dispute. But Allah wants our peace and unity, and so words are matters of great value, weight and consequences.
Abu Hurairah (May Allah be pleased with him) reported that the Prophet (peace be upon him) said,
“
A man utters a word pleasing to Allah without considering it of any significance for which Allah exalts his ranks (in Jannah); another one speaks a word displeasing to Allah without considering it of any importance, and for this reason he will sink down into Hell.” [Al-Bukhari].
This is why Allah Almighty says:
“
O you who have believed, let not a people ridicule [another] people; perhaps they may be better than them; nor let women ridicule [other] women; perhaps they may be better than them. And do not insult one another and do not call each other by [offensive] nicknames. Wretched is the name of disobedience after [one’s] faith. And whoever does not repent – then it is those who are the wrongdoers.” (Quran 49:11)