Quran 65:6

أَسۡكِنُوهُنَّ مِنۡ حَيۡثُ سَكَنتُم مِّن وُجۡدِكُمۡ وَلَا تُضَآرُّوهُنَّ لِتُضَيِّقُواْ عَلَيۡہِنَّ‌ۚ وَإِن كُنَّ أُوْلَـٰتِ حَمۡلٍ۬ فَأَنفِقُواْ عَلَيۡہِنَّ حَتَّىٰ يَضَعۡنَ حَمۡلَهُنَّ‌ۚ فَإِنۡ أَرۡضَعۡنَ لَكُمۡ فَـَٔاتُوهُنَّ أُجُورَهُنَّ‌ۖ وَأۡتَمِرُواْ بَيۡنَكُم بِمَعۡرُوفٍ۬‌ۖ وَإِن تَعَاسَرۡتُمۡ فَسَتُرۡضِعُ لَهُ ۥۤ أُخۡرَىٰ ٦

You shall allow them to live in the same home in which they lived with you, and do not make life so miserable for them that they leave on their own. If they are pregnant, you shall spend on them until they give birth. If they nurse the infant, you shall pay them for this service. You shall maintain the amicable relations among you. If you disagree, you may hire another woman to nurse the child.