Al-Anfal - 8:28

وَاعْلَمُواْ أَنَّمَا أَمْوَالُكُمْ وَأَوْلاَدُكُمْ فِتْنَةٌ وَأَنَّ اللّهَ عِندَهُ أَجْرٌ عَظِيمٌ
[8:28]
And know that your property and your children are a temptation, and that Allah is He with Whom there is a mighty reward.
And know ye that your possessions and your progeny are but a trial; and that it is Allah with Whom lies your highest reward.
And know that your possessions and your children are a test, and that with Allah is immense reward.