Yunus ibn ‘Ubayd reported: Ibn Sirin, may Allah have mercy on him, said, “I have never envied anyone for something they had in the world. If he was among the people of Paradise, how could I envy him for something in the world while he will be sent to Paradise? If he was among the people of Hellfire, how could I envy him for something in the world while he will be sent to Hellfire?”
Source: al-Zuhd al-Kabīr lil-Bayhaqī 845
Imam Ibn Hibban commented, “From envy is born malice, and malice is the root of evil. Whoever harbors evil in his heart will have a bitter plant grow, the taste of which is anger and the fruit of which is regret.”
Source: Rawḍat al-‘Uqalā’ 1/134
عَنْ يُونُسَ بْنِ عُبَيْدٍ قَالَ قَالَ الإِمَامُ ابْنُ سِيرِينَ رَحِمَهُ الله مَا حَسَدْتُ أَحَدَاً عَلَى شَيْءٍ مِن أَمْرِ الدُّنيَا لأَنَّهُ إِنْ كَانَ مِن أَهْلِ الجَنَّة فَكَيْفَ أَحْسُدُهُ عَلَى مَا أَعْطَاهُ اللهُ وَهُوَ حَقِيرٌ بجَانِبِ الجَنَّة وَإِنْ كانَ مِن أَهْلِ النَّار فَكَيْفَ أَحْسُدُهُ عَلَى مَا أَعْطَاهُ اللهُ وَهْوَ يَصِير إِلى النَّار
1/315 الزهد الكبير للبيهقي باب الورع والتقوى
قال ابن حبان ومن الحسد يتولد الحقد والحقد أصل الشر ومن أضمر الشر في قلبه أنبت له نباتا مرا مذاقه نماؤه الغيظ وثمرته الندم
1/134 روضة العقلاء ونزهة الفضلاء