Al-Baqarah 240

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

wa-alladhīna yutawaffawna minkum wayadharūna azwājan waṣiyyatan li-azwājihim matāʿan ilā l-ḥawli ghayra ikh'rājin fa-in kharajna falā junāḥa ʿalaykum fī mā faʿalna fī anfusihinna min maʿrūfin wal-lahu ʿazīzun ḥakīmun

And those who are taken in death among you and leave wives behind - for their wives is a bequest: maintenance for one year without turning [them] out. But if they leave [of their own accord], then there is no blame upon you for what they do with themselves in an acceptable way. And Allāh is Exalted in Might and Wise.