Be Patient on the Jealousy of a Jealous Man, Your Patience will Kill Him

Hasad (jealousy and envy) is among the most destructive emotions or feeling which a man may have towards his fellow human being.

Abu Hurayra reported that the Prophet Muhammad, may Allah bless him and grant him peace, said: 

"Beware of envy. Envy devours good actions as fire devours wood." (or he said, "dry grass"). 

[Abu Dawud]

There was a story about Qaroun and Musa (AS) where Qaroun was jealous of his cousin Musa (AS). Qaroun memorized the whole Tawrah and he was amongst the 70 people who Musa (AS) took to Mt. Tur. Qaroun was jealous of his cousins Musa and Harun (AS) and his story is mentioned in a Hadith and also in the Quran (Surah Qasas Ayahs 76-83)

The Hadith is:

Narrated Ibn `Abbas (May Allah be pleased with him) Musa (alayhis salam) would instruct the 'Bani Israel' about Allah's commandments until he began telling them about their wealth. This was too difficult for Qaroun to bear, so he spoke to some of them saying "Musa says that a person who commits fornication will be stoned to death, let us give a prostitute a sum of money to say that Musa (alayhis salam) did this, and we will finally rest ourselves from him. So when Musa (alayhis salam) exhorted them they said to him "What if you are the adulterer?" He replied, "Even if I am the adulterer" Then they caused the woman to allege that Musa (alayhis salam) had done this (adultery). Musa (alayhis salam) then asked the woman to swear by the 'One who split the seas for Bani Israel' if she was speaking the truth. She then admitted to the plot and Musa (alayhis salam) fell to the ground in prostration crying. Allah inspired him thus: I have commanded the earth to obey you, so do with them what you want. So Musa (alayhis salam) commanded, and the earth swallowed Qaroun and those with him.

The detailed story is in this video from 3:45 to 7:09

The cure for Envy can be found in the Quran in Surah Al-Falaq which was revealed when witchcraft was done to Prophet Muhammad (SAW). By reciting this surah, in the last Ayah we are asking protection from the one who envies.

Inshallah, do your own research and I suggest you read this Surah on the daily if you haven't already been doing it.