Surah Al-Kahf, verse 82

وَأَمَّا ٱلْجِدَارُ فَكَانَ لِغُلَـٰمَيْنِ يَتِيمَيْنِ فِى ٱلْمَدِينَةِ وَكَانَ تَحْتَهُۥ كَنزٌ لَّهُمَا وَكَانَ أَبُوهُمَا صَـٰلِحًا فَأَرَادَ رَبُّكَ أَن يَبْلُغَآ أَشُدَّهُمَا وَيَسْتَخْرِجَا كَنزَهُمَا رَحْمَةً مِّن رَّبِّكَ ۚ وَمَا فَعَلْتُهُۥ عَنْ أَمْرِى ۚ ذَٰلِكَ تَأْوِيلُ مَا لَمْ تَسْطِع عَّلَيْهِ صَبْرًا ﴿٨٢﴾

18:82 As for the wall, it belonged to two orphan boys in the city, and there was a treasure under it that belonged to them. Their father was a righteous man, so your Lord willed that they should reach their maturity and retrieve their treasure, as a mercy from your Lord; I did not do it of my own accord. This is the interpretation of that which you could not bear with patience.”