The word kufu' as used in the original means an example, a similar thing, the one equal in rank and position. In the matter of marriage, kufu' means that the boy and the girl should match each other socially.
The verse means that there is no one in the entire universe, nor ever was, nor ever can be, who is similar to Allah, or equal in rank with Him, or resembling Him in His attributes, works and powers in any degree whatever.
Ibn Al-Qayyim, may Allah have mercy on him, said, “Indeed, the Shariah is founded upon wisdom and welfare for the servants in this life and the afterlife. In its entirety it is justice, mercy, benefit, and wisdom. Every matter which abandons justice for tyranny, mercy for cruelty, benefit for corruption, and wisdom for foolishness is not a part of the Sharia even if it was introduced therein by an interpretation.” (Source: I’lām al-Muwaqqi’īn 3/11)