(Lukman) 31 : 16
يَا بُنَيَّ إِنَّهَا إِنْ تَكُ مِثْقَالَ حَبَّةٍ مِنْ خَرْدَلٍ فَتَكُنْ فِي صَخْرَةٍ أَوْ فِي السَّمَاوَاتِ أَوْ فِي الْأَرْضِ يَأْتِ بِهَا اللَّهُ ۚ إِنَّ اللَّهَ لَطِيفٌ خَبِيرٌ
Oh my dear son! Anything that is related to you even if it is as small as a mustard grain if it is hidden in a layer of rock, or the sky, or the earth, Allah will bring it forth, indeed Allah is the Knower of the innermost feeling of the soul.
See explanation 6: 59, 103-104; 34: 3, and 36: 12.