Sahih Muslim Book - 54, Hadith - 7530

حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِى شَيْبَةَ وَأَبُو كُرَيْبٍ قَالاَ حَدَّثَنَا أَبُو أُسَامَةَ حَدَّثَنَا هِشَامٌ عَنْ أَبِيهِ عَنْ عَائِشَةَ فِى قَوْلِهِ (وَإِنْ خِفْتُمْ أَنْ لاَ تُقْسِطُوا فِى الْيَتَامَى) قَالَتْ أُنْزِلَتْ فِى الرَّجُلِ تَكُونُ لَهُ الْيَتِيمَةُ وَهُوَ وَلِيُّهَا وَوَارِثُهَا وَلَهَا مَالٌ وَلَيْسَ لَهَا أَحَدٌ يُخَاصِمُ دُونَهَا فَلاَ يُنْكِحُهَا لِمَالِهَا فَيَضُرُّ بِهَا وَيُسِىءُ صُحْبَتَهَا فَقَالَ (إِنْ خِفْتُمْ أَنْ لاَ تُقْسِطُوا فِى الْيَتَامَى فَانْكِحُوا مَا طَابَ لَكُمْ مِنَ النِّسَاءِ) يَقُولُ مَا أَحْلَلْتُ لَكُمْ وَدَعْ هَذِهِ الَّتِى تَضُرُّ بِهَا.

It was narrated from 'Aishah concerning the Verse in which Allah, Glorified and Exalted is He, says: "And if you fear that you shall not be able to deal justly with the orphan girls..." - that she said: "This was revealed concerning the man who has an orphan girl (in his care), and he is her guardian and her heir, and she has wealth but she does not have anyone to contend on her behalf. He does not want to arrange her marriage (to someone else) because of her wealth, so he harms her and mistreats her, so He said: "And if you fear that you shall not be able to deal justly with the orphan girls then marry (other) women of your choice..." meaning: Those whom I have made permissible for you, and leave alone this one whom you are harming."