Al-Anfal 28

وَٱعْلَمُوٓا۟ أَنَّمَآ أَمْوَٰلُكُمْ وَأَوْلَـٰدُكُمْ فِتْنَةٌ وَأَنَّ ٱللَّهَ عِندَهُۥٓ أَجْرٌ عَظِيمٌ

wa-iʿ'lamū annamā amwālukum wa-awlādukum fit'natun wa-anna l-laha ʿindahu ajrun ʿaẓīmun

And know that your properties and your children are but a trial and that Allāh has with Him a great reward.