Adoption In Islam
Quran says “Call them by [the names of] their fathers; it is more just in the sight of Allah . But if you do not know their fathers – then they are [still] your brothers in religion and those entrusted to you. And there is no blame upon you for that in which you have erred but [only for] what your hearts intended. And ever is Allah Forgiving and Merciful” [al-Ahzaab 33:5]. Adopted child linage has to be protected as rulings connected to breast-feeding, inheritance, mehram na mehram etc are important to Islam. Kindly Refer to this video https://youtu.be/53Ypm6mvAHQ?t=35
Here it is directly from Quran https://youtu.be/HybVtd_nbzM https://youtu.be/kWfL0uK0RpE