Allah, Most High, has said:
“From the evil of the envier when he envies,”
“Are they jealous of people because of what Allah in His bounty has given them?”
Bukhari relates on the authority of Anas (RadiyAllahu Anhu) that the Prophet, sallallahu ‘alayhi wa sallam, said:
“Do not hate one another, or envy one another, or turn your backs on one another; rather be brethren as Allah’s slaves. It is not lawful for a Muslim to break off relations with his brother for more than three consecutive nights so that they both turn from each other: the better of them is he who gives the first greeting.”
Al-Hasan al-Basri said with regard to Allah’s statement, “From the evil of the envier when he envies”: “This was the first sin to have been committed in heaven.” (A reference to Satan’s jealousy of Adam, ‘alayhis-salam.)
Al-Ahnaf ibn Qays said, “Mark these five truths: an envious man finds no peace, a liar has no manly virtue, a greedy man is not to be trusted, a miser has no power, and a man of bad character has no glory.”
Khalil ibn Ahmad said, “A man who does wrong through envy is very similar to one who is wronged: he has no peace of mind, and he is always grieved.”
Al-Mubarrad recited the following lines:
The eye of the envier always sees scandal,
bringing out faults and hiding the good.
He meets you cheerfully, with a smiling face,
while his heart conceals his true feelings.
The envier enmity comes without provocation,
yet he accepts no excuses while he attacks.