Al-Mundhiri recorded the following chapter in his book Al-Targhib wal-Tarhib:

الترهيب من الحسد وفضل سلامة الصدر

Discouragement of envy, and the virtue of a pure heart.

Source: al-Targhīb wal-Tarhīb 3/544

Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said:

إِيَّاكُمْ وَالظَّنَّ فَإِنَّ الظَّنَّ أَكْذَبُ الْحَدِيثِ وَلَا تَحَسَّسُوا وَلَا تَجَسَّسُوا وَلَا تَنَافَسُوا وَلَا تَحَاسَدُوا وَلَا تَبَاغَضُوا وَلَا تَدَابَرُوا وَكُونُوا عِبَادَ اللَّهِ إِخْوَانًا

Beware of suspicion, for suspicion is the most false of tales. Do not seek out faults, do not spy on each other, do not contend with each other, do not envy each other, do not hate each other, and do not turn away from each other. Rather, be servants of Allah as brothers.

Source: Ṣaḥīḥ al-Bukhārī 5719, Grade: Muttafaqun Alayhi

In another narration, the Prophet said:

لَا تَحَاسَدُوا وَلَا تَنَاجَشُوا وَلَا تَبَاغَضُوا وَلَا تَدَابَرُوا وَلَا يَبِعْ بَعْضُكُمْ عَلَى بَيْعِ بَعْضٍ وَكُونُوا عِبَادَ اللَّهِ إِخْوَانًا الْمُسْلِمُ أَخُو الْمُسْلِمِ لَا يَظْلِمُهُ وَلَا يَخْذُلُهُ وَلَا يَحْقِرُهُ التَّقْوَى هَاهُنَا

Do not envy each other, do not outbid each other, do not hate each other, do not turn away from each other, and do not outsell each other. Rather, be servants of Allah as brothers. The Muslim is the brother of another Muslim. He does not wrong him, nor humiliate him, nor look down upon him. Righteousness is here.

The Prophet pointed to his chest three times, and he said:

بِحَسْبِ امْرِئٍ مِنْ الشَّرِّ أَنْ يَحْقِرَ أَخَاهُ الْمُسْلِمَ كُلُّ الْمُسْلِمِ عَلَى الْمُسْلِمِ حَرَامٌ دَمُهُ وَمَالُهُ وَعِرْضُهُ

It is enough evil for a man to look down upon his Muslim brother. The entirety of the Muslim is sacred to another Muslim: his life, his wealth, and his honor.

Source: Ṣaḥīḥ Muslim 2564, Grade: Sahih

Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said:

لا يَجْتَمِعُ فِي جَوْفِ عَبْدٍ مُؤْمِنٍ الإِيمَانُ وَالْحَسَدُ

Faith and envy do not combine within a believing servant.

Source: Sunan al-Nasā’ī 3109, Grade: Sahih

In another narration, the Prophet said:

لَا يَجْتَمِعُ الشُّحُّ وَالْإِيمَانُ فِي قَلْبِ عَبْدٍ أَبَدًا

Greed and faith are never combined in the heart of a servant.

Damurah ibn Tha’labah reported: The Messenger of Allah, peace and blessings be upon him, said:

لا يَزَالُ النَّاسُ بِخَيْرٍ مَا لَمْ يَتَحَاسَدُوا

The people will remain upon goodness as long as they do not envy each other.

Source: al-Mu’jam al-Kabīr 8079, Grade: Jayyid

Al-Zubayr ibn al-‘Awwam reported: The Messenger of Allah, peace and blessings be upon him, said:

دَبَّ إِلَيْكُمْ دَاءُ الأُمَمِ قَبْلَكُمْ الحَسَدُ وَالبَغْضَاءُ هِيَ الحَالِقَةُ لاَ أَقُولُ تَحْلِقُ الشَّعَرَ وَلَكِنْ تَحْلِقُ الدِّينَ وَالَّذِي نَفْسِي بِيَدِهِ لاَ تَدْخُلُوا الجَنَّةَ حَتَّى تُؤْمِنُوا وَلاَ تُؤْمِنُوا حَتَّى تَحَابُّوا أَفَلاَ أُنَبِّئُكُمْ بِمَا يُثَبِّتُ ذَلِكَ لَكُمْ أَفْشُوا السَّلاَمَ بَيْنَكُمْ

Lurking towards you are the diseases of the nations before you. Envy and hatred are the razor. I do not say it shaves hair, but rather it shaves the religion. By the one in whose hand is my soul, you will not enter Paradise until you have faith and you will not have faith until you love each other. Shall I tell you what can affirm that for you? Spread peace between yourselves.

Source: Sunan al-Tirmidhī 2510, Grade: Sahih

Abdullah ibn Amr reported: I said, “O Messenger of Allah, who are the best people?” The Messenger of Allah, peace and blessings be upon him, said:

ذُو الْقَلْبِ الْمَخْمُومِ وَاللِّسَانِ الصَّدُوقِ

One with a heart swept clean and truthful in speech.

We said, “O Messenger of Allah, we know truthful in speech. What is a heart swept clean?” The Prophet said:

هُوَ التَّقِيُّ النَّقِيُّ لا إِثْمَ فِيهِ وَلا بَغْيَ وَلا حَسَدَ

One that is mindful of Allah and pure, in which there is no sin, nor aggression, nor envy.

We said, “Who shows a sign of it?” The Prophet said:

الَّذِي يَشْنَأُ الدُّنْيَا وَيُحِبُّ الآخِرَةَ

One who hates worldliness and loves the Hereafter.

They said, “And who shows a sign of it?” The Prophet said:

مُؤْمِنٌ فِي خُلُقٍ حَسَنٍ

A believer with good character.

Source: Shu’ab al-Imān 4457, Grade: Sahih