Envy also called hasad on arabic, is a dangerous disease.
It can go that far, that it ends up in morder.
The first killing in the story of mankind, happend actually because of envy.
|And (O Muhammad صلى الله عليه وسلم) recite to them (the Jews) the story of the two sons of Adam (Habil and Qabil-Abel and Cain) in truth; when each offered a sacrifice (to Allah), it was accepted from the one but not from the other. The latter said to the former: “I will surely kill you. ” The former said: “Verily, Allah accepts only from those who are Al-Muttaqun (the pious).”|
|“If you do stretch your hand against me to kill me, I shall never stretch my hand against you to kill you : for I fear Allah, the Lord of the ‘Alamin (mankind, jinn, and all that exists).”|
|“Verily, I intend to let you draw my sin on yourself as well as yours, then you will be one of the dwellers of the Fire; and that is the recompense of the Zalimun (polytheists and wrong-doers).”|
|So the Nafs (self) of the other (latter one) encouraged him and made fair-seeming to him the murder of his brother; he murdered him and became one of the losers.|
|Then Allah sent a crow who scratched the ground to show him to hide the dead body of his brother. He (the murderer) said: “Woe to me! Am I not even able to be as this crow and to hide the dead body of my brother?” Then he became one of those who regretted. Surah 5 verse 27-31.|
We’ve the other story about Yusuf a.s. and his brothers.
When they said: “Truly, Yusuf (Joseph) and his brother (Benjamin) are dearer to our father than we, while we are a strong group. Really, our father is in a plain error.
“Kill Yusuf (Joseph) or cast him out to some (other) land, so that the favour of your father may be given to you alone, and after that you will be righteous folk (by intending repentance before committing the sin).”
One from among them said: “Kill not Yusuf (Joseph), but if you must do something, throw him down to the bottom of a well; he will be picked up by some caravan of travellers.”
They said: “O our father! Why do you not trust us with Yusuf (Joseph) though we are indeed his well-wishers?”
Send him with us tomorrow to enjoy himself and play, and verily, we will take care of him.”
He [Ya’qub (Jacob)] said: “Truly, it saddens me that you should take him away. I fear lest a wolf should devour him, while you are careless of him.”
They said: “If a wolf devours him, while we are a strong group (to guard him), then surely, we are the losers.”
So, when they took him away and they all agreed to throw him down to the bottom of the well, (they did so) and We revealed to him: “Indeed, you shall (one day) inform them of this their affair, when they know (you) not.”
And they came to their father in the early part of the night weeping.
They said: “O our father! We went racing with one another, and left Yusuf (Joseph) by our belongings and a wolf devoured him; but you will never believe us even when we speak the truth.”
And they brought his shirt stained with false blood. He said: “Nay, but your ownselves have made up a tale. So (for me) patience is most fitting. And it is Allah (Alone) Whose help can be sought against that (lie) which you describe.” Surah 12 verse 8-18.
Don’t let envy overtake you, because it’ll destroy you. And be seek help by Allah azza wa jal