Tirmîdhî narrated from al-Zubayr Ibn al-Awam (Allah be pleased with them) that Prophet (sallallahu alaihi wa-sallam) said… ‘There has come to you the disease of the nations before you… Jealousy and Hatred. This is the Shaver (Destroyer) I do not say that it shaves hair, but that it shaves (destroys) Faith.
Source (Hasan) Jami at- Tirmidhi (2434)

‘Hasad’ can cause the person to indulge in disbelief because it causes the individual to feel that Allah has not been fair with him; he forgets all the Mercy and Blessings that Allah has bestowed upon him. The Messenger of Allah (Sallallahu Alaihi Wa-Sallam) said: They are enemies for Allah’s bounties. The companions asked: ‘Who are they? The Messenger of Allah(sallallahu alaihi wa-sallam) said: ‘Those who envy people for what Allah has given them of Bounty.” [Source at-Tabaranî]

It is reported that Muhammad Ibn. Sirin, [Allah have mercy on him] said: “I have never envied anyone over anything: if a person is going to be in the Fire …how could I envy him over some worldly matter when he is destined for the Fire? And if he is going to Paradise, how could I be envious of a man of Paradise with whom AllahTabaraka wa ta’ala is pleased.”

Muslim said: “We have never heard anything better than this from the words of Ibn Sirin.” [ Source: Abu Bakr Al-Daynuri, Al-Mujalasah wa Jawahir Al-‘Ilm article 2931.]

O Allah, I ask You for knowledge that is of benefit, a good provision, and deeds that will be accepted. Aameen.