Al-Baqara 2:233

Mothers[126] may breastfeed their children for two full years, for those who wish to complete the full term of breastfeeding. It is the obligation upon the father of the child that he provides food and clothing [for the mothers] with fairness. No soul is obligated beyond what it can bear. Neither mother nor father should be made to suffer on account of their child, and the same duty is incumbent on the heir. If they both decide on weaning, by mutual consent and consultation, there is no sin on them. And If you wish to provide a wet nurse to your children, there is no sin on you, if you pay in full what you have agreed upon with fairness. But fear Allah and know that Allah is All-Seeing of what you do.

[126] ‘Mothers’ here means divorced mothers.

Mothers may nurse [i.e., breastfeed] their children two complete years for whoever wishes to complete the nursing [period]. Upon the father is their [i.e., the mothers'] provision and their clothing according to what is acceptable. No person is charged with more than his capacity. No mother should be harmed through her child, and no father through his child. And upon the [father's] heir is [a duty] like that [of the father]. And if they both desire weaning through mutual consent from both of them and consultation, there is no blame upon either of them. And if you wish to have your children nursed by a substitute, there is no blame upon you as long as you give payment according to what is acceptable. And fear Allāh and know that Allāh is Seeing of what you do.

233. The mothers shall give suck to their children for two whole years, (that is) for those (parents) who desire to complete the term of suckling, but the father of the child shall bear the cost of the mother’s food and clothing on a reasonable basis. No person shall have a burden laid on him greater than he can bear. No mother shall be treated unfairly on account of her child, nor father on account of his child. And on the (father’s) heir is incumbent the like of that (which was incumbent on the father). If they both decide on weaning, by mutual consent, and after due consultation, there is no sin on them. And if you decide on a foster suckling-mother for your children, there is no sin on you, provided you pay (the mother) what you agreed (to give her) on reasonable basis. And fear Allâh and know that Allâh is All-Seer of what you do.

Mothers shall suckle their children for two whole years; (that is) for those who wish to complete the suckling. The duty of feeding and clothing nursing mothers in a seemly manner is upon the father of the child. No-one should be charged beyond his capacity. A mother should not be made to suffer because of her child, nor should he to whom the child is born (be made to suffer) because of his child. And on the (father's) heir is incumbent the like of that (which was incumbent on the father). If they desire to wean the child by mutual consent and (after) consultation, it is no sin for them; and if ye wish to give your children out to nurse, it is no sin for you, provide that ye pay what is due from you in kindness. Observe your duty to Allah, and know that Allah is Seer of what ye do.