Importance of zuhud and measured expectations

وَلَئِن قُتِلْتُمْ فِى سَبِيلِ ٱللَّهِ أَوْ مُتُّمْ لَمَغْفِرَةٌۭ مِّنَ ٱللَّهِ وَرَحْمَةٌ خَيْرٌۭ مِّمَّا يَجْمَعُونَ

And if ye are slain, or die, in the way of Allah, forgiveness and mercy from Allah are far better than all they could amass.

وَلَا تَمُدَّنَّ عَيْنَيْكَ إِلَىٰ مَا مَتَّعْنَا بِهِۦٓ أَزْوَٰجًۭا مِّنْهُمْ زَهْرَةَ ٱلْحَيَوٰةِ ٱلدُّنْيَا لِنَفْتِنَهُمْ فِيهِ ۚ وَرِزْقُ رَبِّكَ خَيْرٌۭ وَأَبْقَىٰ

Nor strain thine eyes in longing for the things We have given for enjoyment to parties of them, the splendour of the life of this world, through which We test them: but the provision of thy Lord is better and more enduring.

وَقَالَ ٱلَّذِينَ أُوتُوا۟ ٱلْعِلْمَ وَيْلَكُمْ ثَوَابُ ٱللَّهِ خَيْرٌۭ لِّمَنْ ءَامَنَ وَعَمِلَ صَٰلِحًۭا وَلَا يُلَقَّىٰهَآ إِلَّا ٱلصَّٰبِرُونَ

But those who had been granted (true) knowledge said: "Alas for you! The reward of Allah (in the Hereafter) is best for those who believe and work righteousness: but this none shall attain, save those who steadfastly persevere (in good)."

مَن كَانَ يُرِيدُ حَرْثَ ٱلْءَاخِرَةِ نَزِدْ لَهُۥ فِى حَرْثِهِۦ ۖ وَمَن كَانَ يُرِيدُ حَرْثَ ٱلدُّنْيَا نُؤْتِهِۦ مِنْهَا وَمَا لَهُۥ فِى ٱلْءَاخِرَةِ مِن نَّصِيبٍ

To any that desires the tilth of the Hereafter, We give increase in his tilth, and to any that desires the tilth of this world, We grant somewhat thereof, but he has no share or lot in the Hereafter.