وَٱلَّذِينَ يُتَوَفَّوْنَ مِنكُمْ وَيَذَرُونَ أَزْوَٰجًا وَصِيَّةً لِّأَزْوَٰجِهِم مَّتَـٰعًا إِلَى ٱلْحَوْلِ غَيْرَ إِخْرَاجٍ ۚ فَإِنْ خَرَجْنَ فَلَا جُنَاحَ عَلَيْكُمْ فِى مَا فَعَلْنَ فِىٓ أَنفُسِهِنَّ مِن مَّعْرُوفٍ ۗ وَٱللَّهُ عَزِيزٌ حَكِيمٌ
Those of you who die leaving wives shall bequeath for their wives providing for a year, without turning them out; but if they leave, there is no sin upon you in respect of what they may do with themselves in accordance with honourable norms. And Allah is all-mighty, all-wise.