Is Adoption is not allowed in Islam ?
However, the Qur'an gives specific rules about the legal relationship between a child and his/her adoptive family. The child's biological family is never hidden; their ties to the child are never severed. The Qur'an specifically reminds adoptive parents that they are not the child's biological parents:
"...Nor has He made your adopted sons your (biological) sons. Such is (only) your (manner of) speech by your mouths. But Allah tells (you) the Truth, and He shows the (right) Way. Call them by (the names of) their fathers; that is juster in the sight of Allah. But if you know not their father's (names ...more
nothing such in Islam I guess
...Nor did He make your adopted children to be your sons. Such is what you claim with your mouths, but God speaks the truth, and He guides to the path.
Name them by retaining their fathers names. That is more just with God. But if you do not know their fathers, then, name them as your brethren in the obligation and your friends. There is no sin upon you if you make a mistake in this respect; but you will be responsible for what your hearts deliberately intend. God is Forgiver, Merciful. [33:4-5]
However, that is not to say they should be treated any differently in terms of affection and care, on the contrary, they are to be considered as one of our own:
...and they ask you regarding the orphans, say: To fix their situation is best, and if you are to care for them, then they are your fellows.... [ ...more