The word(s) "adopt" appears 3 time(s) in 3 verse(s) in Quran in Muhammad Habib Shakir translation.

(1) Rather you wish to put questions to your Apostle, as Musa was questioned before; and whoever adopts unbelief instead of faith, he indeed has lost the right direction of the way.

(2) And the Egyptian who bought him said to his wife: Give him an honorable abode, maybe he will be useful to us, or we may adopt him as a son. And thus did We establish Yusuf in the land and that We might teach him the interpretation of sayings; and Allah is the master of His affair, but most people do not know.

(3) And when you said to him to whom Allah had shown favor and to whom you had shown a favor: Keep your wife to yourself and be careful of (your duty to) Allah; and you concealed in your soul what Allah would bring to light, and you feared men, and Allah had a greater right that you should fear Him. But when Zaid had accomplished his want of her, We gave her to you as a wife, so that there should be no difficulty for the believers in respect of the wives of their adopted sons, when they have accomplished their want of them; and Allah's command shall be performed.