Quran 2:233

وَٱلۡوَٲلِدَٲتُ يُرۡضِعۡنَ أَوۡلَـٰدَهُنَّ حَوۡلَيۡنِ كَامِلَيۡنِ‌ۖ لِمَنۡ أَرَادَ أَن يُتِمَّ ٱلرَّضَاعَةَ‌ۚ وَعَلَى ٱلۡمَوۡلُودِ لَهُ ۥ رِزۡقُهُنَّ وَكِسۡوَتُہُنَّ بِٱلۡمَعۡرُوفِ‌ۚ لَا تُكَلَّفُ نَفۡسٌ إِلَّا وُسۡعَهَا‌ۚ لَا تُضَآرَّ وَٲلِدَةُۢ بِوَلَدِهَا وَلَا مَوۡلُودٌ۬ لَّهُ ۥ بِوَلَدِهِۦ‌ۚ وَعَلَى ٱلۡوَارِثِ مِثۡلُ ذَٲلِكَ‌ۗ فَإِنۡ أَرَادَا فِصَالاً عَن تَرَاضٍ۬ مِّنۡہُمَا وَتَشَاوُرٍ۬ فَلَا جُنَاحَ عَلَيۡہِمَا‌ۗ وَإِنۡ أَرَدتُّمۡ أَن تَسۡتَرۡضِعُوٓاْ أَوۡلَـٰدَكُمۡ فَلَا جُنَاحَ عَلَيۡكُمۡ إِذَا سَلَّمۡتُم مَّآ ءَاتَيۡتُم بِٱلۡمَعۡرُوفِ‌ۗ وَٱتَّقُواْ ٱللَّهَ وَٱعۡلَمُوٓاْ أَنَّ ٱللَّهَ بِمَا تَعۡمَلُونَ بَصِيرٌ۬ ٢٣٣

Divorced mothers shall nurse their infants two full years, if the father so wishes. The father shall provide the mother’s food and clothing equitably. No one shall be burdened beyond his ability. No mother shall be harmed on account of her infant, nor shall the father be harmed because of his infant. (If the father dies), his inheritor shall assume these responsibilities. If the infant’s parents mutually agree to part, after due consultation, they commit no error by doing so. You commit no error by hiring nursing mothers, so long as you pay them equitably. You shall observe ALLAH, and know that ALLAH is Seer of everything you do.