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"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 Allaah and know that Allaah is All-Seer of what you do." [Al-Baqarah (2):233]

Narrated An-Nu'man bin Bashir:

I heard Allah's Apostle saying, 'Both legal and illegal things are evident but in between them there are doubtful (suspicious) things and most of the people have no knowledge about them. So whoever saves himself from these suspicious things saves his religion and his honor. And whoever indulges in these suspicious things is like a shepherd who grazes (his animals) near the Hima (private pasture) of someone else and at any moment he is liable to get in it. (O people!) Beware! Every king has a Hima and the Hima of Allah on the earth is His illegal (forbidden) things. Beware! There is a piece of flesh in the body if it becomes good (reformed) the whole body becomes good but if it gets spoilt the whole body gets spoilt and that is the heart. [The Book of Faith Volume 1, Book 2, Hadeeth 49]