The Holy Qur'an describes the aim of this marriage in the following manner...

The Holy Qur'an describes the aim of this marriage in the following manner: 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 Zayd 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. (33:37) The unbelievers found an excuse in…